It is now for the 4th time that my colleague and friend Mea Bombardelli
and me organize the presentation of the Department of Mathematics of
the University of Zagreb at the University Fair. And since the beginning
of our work (1998) the (nonexplicitly stated) motto is "Have fun with
math and mathematicians".
This year the presentation of the MathDept in Zagreb showed both "old" elements (two prize games from the previous year  one with puzzles and problems, the other consisting in combining mathematicians and their biographies; also many posters were made last year already  about famous Croatian mathematicians, famous female mathematicians, then of cours information about the study programme; the "exhibits" were also mostly from last year  math. toys, a "computer with mouse" i.e. abacus with plush mouse etc.) New this year was a third prizegame called "Find the burried treasure", consisting in finding it through solving 3 mathproblems from various fields, appearing as lands on a handmade map of the "Mathematical continent". The prizes were chocolate coins and nuggets. New were also short (510 minutes) presentations of various interesting or fun mathematical themes ("What are diapers", "Fibonacci numbers in nature", "Mona Lisa and math", "Fractals", "Equations and floods", "Math and music", "CDmath", "Origami: lots of paper and some math", "Magic (or Moebius) band", "Math of the hungarian cube", "Flatland: take a walk in the fourth dimension", "Misfortune never comes alone", "Mathematical magic tricks"). 
Here are the pictures. Since there are many (33), I grouped them this way:
Pictures of the stand 
Pictures of the presentations

Pictures of our chemist and geophysic
friends and colleagues 