Badges.

\documentclass{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{anyfontsize,csvsimple,ifthen,tikz,xcolor}
\usetikzlibrary{calc}
\newif\ifDraftMode\DraftModefalse
\newif\ifMirroredPage\MirroredPagefalse

% Comment out the following line for the final print.  Disabling draft
% mode enables overprinting to avoid white margins after cropping the
% badges and it also hides the black frame around each badge.
\DraftModetrue

% Uncomment the following line to enable output suitable for the
% second side of 2-sided printing.
% \MirroredPagetrue

% You may change the following two values (within reason).  Everything
% else will be recomputed automatically.
\newcommand{\BadgeWidth}{9cm}
\newcommand{\BadgeHeight}{5.9cm}

% Distance between badges.  You probably do not need to change this.
\newcommand{\BadgeSepX}{0.6cm}
\newcommand{\BadgeSepY}{0.9cm}

% The amount of overprinting (irrelevant for draft mode)
\newcommand{\Fudge}{1.5mm}

% Shortening of the crop marks (may be negative)
\newcommand{\CropMarksSep}{0.5mm}

% The colors for the events markers
\colorlet{eventA}{blue}
\colorlet{eventB}{green!60!black}
\definecolor{eventC}{RGB}{255,100,0}
\colorlet{eventD}{purple}

% There are 8 badges per page, so we can compute the margins.
\pgfmathsetlengthmacro{\BadgeMarginTop}{(\paperheight - 4 * \BadgeHeight - 3 * \BadgeSepY) / 2}
\pgfmathsetlengthmacro{\BadgeMarginLeft}{(\paperwidth - 2 * \BadgeWidth - \BadgeSepX) / 2}

% No overprinting in draft mode.
\ifDraftMode
  \renewcommand{\Fudge}{0}
\fi

% If the number or names of the optional events change, you need to
% adapt the following command.
\newcommand{\attendance}[5]{
  \pgfmathsetlengthmacro{\xshift}{#1 * \BadgeWidth / 4}
  \begin{scope}[xshift=\xshift]
    \draw [fill=#2!20,draw=none] (#4, -\Fudge) rectangle (\BadgeWidth / 4 + #5, 0.5);
    \node [anchor=base] at (\BadgeWidth / 8,0.12) {\textbf{\large{#3}}};
  \end{scope}
}
\newcommand{\attendsEventA}{\attendance{0}{eventA}{A}{-\Fudge}{0}}
\newcommand{\attendsEventB}{\attendance{1}{eventB}{B}{0}{0}}
\newcommand{\attendsEventC}{\attendance{2}{eventC}{C}{0}{0}}
\newcommand{\attendsEventD}{\attendance{3}{eventD}{D}{0}{\Fudge}}

\newcommand{\TryNameSize}[2]{
  \begin{scope}
    \node [anchor=mid] (try#1) at (\BadgeWidth / 2, 3.2)
      {\textbf{\fontsize{#1}{#1}\selectfont{\phantom{\firstname~\lastname}}}};
    \newdimen\x
    \pgfextractx{\x}{\pgfpointanchor{try#1}{east}}
    \pgfmathtruncatemacro{\TooLarge}{\x > \BadgeWidth - 0.2cm}
    \ifnum \TooLarge=1
      #2
    \else
      \node [anchor=mid] at (\BadgeWidth / 2, 3.2)
        {\textbf{\fontsize{#1}{#1}\selectfont\firstname~\lastname}};
    \fi
  \end{scope}
}

\newcommand*{\SingleBadge}[1]{
  \pgfmathsetlengthmacro{\xshift}{
    mod(#1, 2) * (\BadgeWidth + \BadgeSepX) + \BadgeWidth / 2 + \BadgeMarginLeft}
  \pgfmathsetlengthmacro{\yshift}{
    int(#1 / 2) * (\BadgeHeight + \BadgeSepY) + \BadgeHeight / 2 + \BadgeMarginTop}
  \node [xshift=\xshift,yshift=-\yshift]
    at (current page.north west) {
  \begin{tikzpicture}
    \draw [use as bounding box,draw=none] (0,0) rectangle (\BadgeWidth,\BadgeHeight);

    % If you want to change the layout or content of the badge, this
    % is the place.

    %% The headline
    \draw [fill=black!5,draw=none]
      (-\Fudge, \BadgeHeight - 0.9cm) rectangle (\BadgeWidth + \Fudge, \BadgeHeight + \Fudge);

    \node at (\BadgeWidth / 2, \BadgeHeight - 0.45cm) {
      \textbf{\Large{ABC 2015}}};
    \node at (1, \BadgeHeight - 0.45cm) {Logo};
    \node at (\BadgeWidth - 0.7cm, \BadgeHeight - 0.45cm) {Logo};

    %% The middle part
    % Try different font sizes for the name to find the maximum
    % size that fits.
    \TryNameSize{36}{
    \TryNameSize{34}{
    \TryNameSize{32}{
    \TryNameSize{31}{
    \TryNameSize{30}{
    \TryNameSize{29}{
    \TryNameSize{28}{
    \TryNameSize{27}{
    \TryNameSize{26}{
    \TryNameSize{25}{
    \TryNameSize{24}{
    \TryNameSize{23}{
    \TryNameSize{22}{
    \TryNameSize{21}{
    \TryNameSize{20}{
    \TryNameSize{19}{
      \node [anchor=mid] at (\BadgeWidth / 2, 3.2)
        {\textbf{\fontsize{18}{18}\selectfont{\firstname~\lastname}}};
    }}}}}}}}}}}}}}}}

    \node [anchor=base] at (\BadgeWidth / 2, 2.2) {\Large{\affiliation}};

    %% The bottom line
    \ifthenelse{\equal{\eventA}{}}{}{\attendsEventA}
    \ifthenelse{\equal{\eventB}{}}{}{\attendsEventB}
    \ifthenelse{\equal{\eventC}{}}{}{\attendsEventC}
    \ifthenelse{\equal{\eventD}{}}{}{\attendsEventD}
    % Draw a fine gray line above the event markers.
    \draw [draw=black!30] (-\Fudge, 0.5) -- (\BadgeWidth + \Fudge, 0.5);

    %% A frame
    % Draw a frame around the badge if in draft mode.
    \ifDraftMode
      \draw (0,0) rectangle (\BadgeWidth,\BadgeHeight);
    \fi
  \end{tikzpicture}
  };
}

% Drawing the crop marks is rather elaborate.
\pgfmathsetlengthmacro{\VerticalMarkLength}{\BadgeMarginTop - \CropMarksSep}
\newcommand*{\VerticalMarksHelper}[2]{
  \draw ($ (current page.#1 west) + (\BadgeMarginLeft, 0) $)
     -- ($ (current page.#1 west) + (\BadgeMarginLeft, -\VerticalMarkLength * #2) $);
  \draw ($ (current page.#1 west) + (\BadgeMarginLeft + \BadgeWidth, 0) $)
     -- ($ (current page.#1 west) + (\BadgeMarginLeft + \BadgeWidth, -\VerticalMarkLength * #2) $);
  \draw ($ (current page.#1 west) + (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX, 0) $)
     -- ($ (current page.#1 west) + (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX, -\VerticalMarkLength * #2) $);
  \draw ($ (current page.#1 west) + (\BadgeMarginLeft + 2 * \BadgeWidth + \BadgeSepX, 0) $)
     -- ($ (current page.#1 west) + (\BadgeMarginLeft + 2 * \BadgeWidth + \BadgeSepX, -\VerticalMarkLength * #2) $);
}
\newcommand{\VerticalMarks}{
  % top
  \VerticalMarksHelper{north}{1}
  % bottom
  \VerticalMarksHelper{south}{-1}
  % between the badges
  \foreach \i in {0,...,2} {
    \pgfmathsetmacro{\step}{\i * \BadgeHeight + \i * \BadgeSepY}
    \draw ($ (current page.north west) +
      (\BadgeMarginLeft, -\BadgeMarginTop - \step - \BadgeHeight - \CropMarksSep) $)
       -- ($ (current page.north west) +
      (\BadgeMarginLeft, -\BadgeMarginTop - \step - \BadgeHeight - \BadgeSepY + \CropMarksSep) $);
    \draw ($ (current page.north west) +
      (\BadgeMarginLeft + \BadgeWidth, -\BadgeMarginTop - \step - \BadgeHeight - \CropMarksSep) $)
       -- ($ (current page.north west) +
      (\BadgeMarginLeft + \BadgeWidth, -\BadgeMarginTop - \step - \BadgeHeight - \BadgeSepY + \CropMarksSep) $);
    \draw ($ (current page.north west) +
      (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX, -\BadgeMarginTop - \step - \BadgeHeight - \CropMarksSep) $)
       -- ($ (current page.north west) +
      (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX, -\BadgeMarginTop - \step - \BadgeHeight - \BadgeSepY + \CropMarksSep) $);
    \draw ($ (current page.north west) +
      (\BadgeMarginLeft + 2 * \BadgeWidth + \BadgeSepX, -\BadgeMarginTop - \step - \BadgeHeight - \CropMarksSep) $)
       -- ($ (current page.north west) +
      (\BadgeMarginLeft + 2 * \BadgeWidth + \BadgeSepX, -\BadgeMarginTop - \step - \BadgeHeight - \BadgeSepY + \CropMarksSep) $);
  }
}
\pgfmathsetlengthmacro{\HorizontalMarkLength}{\BadgeMarginLeft - \CropMarksSep}
\newcommand{\HorizontalMarks}{
  \foreach \i in {0,...,3} {
    \pgfmathsetmacro{\step}{\i * \BadgeHeight + \i * \BadgeSepY}
    % left
    \draw ($ (current page.north west) + (0, -\BadgeMarginTop - \step) $)
       -- ($ (current page.north west) + (\HorizontalMarkLength, -\BadgeMarginTop - \step) $);
    \draw ($ (current page.north west) + (0, -\BadgeMarginTop - \BadgeHeight - \step) $)
       -- ($ (current page.north west) + (\HorizontalMarkLength, -\BadgeMarginTop - \BadgeHeight - \step) $);

    % middle
    \draw ($ (current page.north west) + (\BadgeMarginLeft + \BadgeWidth + \CropMarksSep, -\BadgeMarginTop - \step) $)
       -- ($ (current page.north west) + (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX - \CropMarksSep, -\BadgeMarginTop - \step) $);
    \draw ($ (current page.north west) + (\BadgeMarginLeft + \BadgeWidth + \CropMarksSep, -\BadgeMarginTop - \BadgeHeight - \step) $)
       -- ($ (current page.north west) + (\BadgeMarginLeft + \BadgeWidth + \BadgeSepX - \CropMarksSep, -\BadgeMarginTop - \BadgeHeight - \step) $);

    % right
    \draw ($ (current page.north east) + (0, -\BadgeMarginTop - \step) $)
       -- ($ (current page.north east) + (-\HorizontalMarkLength, -\BadgeMarginTop - \step) $);
    \draw ($ (current page.north east) + (0, -\BadgeMarginTop - \BadgeHeight - \step) $)
       -- ($ (current page.north east) + (-\HorizontalMarkLength, -\BadgeMarginTop - \BadgeHeight - \step) $);
  }
}

\newcommand{\CropMarks}{
  \begin{tikzpicture}[remember picture,overlay,
    every path/.style={
        color=black,
        line width=0.01pt
    }]
    \VerticalMarks
    \HorizontalMarks
  \end{tikzpicture}
}

\newcommand{\BadgesPerPage}{8}

\pagestyle{empty}
\begin{document}
  \sffamily
  \def\i{0}
  % The number of badges already printed on this page plus 1.
  \def\onthispagesofar{1}
  \csvreader{participants.csv}{%
    1=\affiliation,4=\firstname,5=\lastname,
    6=\eventA,7=\eventB,8=\eventC,9=\eventD}%
  {
    \pgfmathtruncatemacro{\j}{mod(\i, 8)}

    \ifnum\j=0\ifnum\i=0\else
      \newpage
    \fi\fi

    \ifMirroredPage
      \pgfmathtruncatemacro{\j}{\j - mod(\i, 2) + mod(\i + 1, 2)}
    \fi

    \begin{tikzpicture}[remember picture,overlay]
      \SingleBadge{\j}
    \end{tikzpicture}

    \ifnum\onthispagesofar=\BadgesPerPage
      \CropMarks
    \fi

    \pgfmathtruncatemacro{\i}{\i+1}
    \pgfmathtruncatemacro{\onthispagesofar}{mod(\onthispagesofar, \BadgesPerPage) + 1}
  }%
  \CropMarks
\end{document}