I am teaching a new course this year that has a lot of card matches. The school provides 1 ream of paper per week - and that isn't cardstock - so I made a class set.
Played the game in one period out of 4 - and 1/3 of the cards did not make it back at the end of class.
These are seniors.
The next class wanted me to create a new game for them.
Yeah, I have nothing better to do.