I organized a pre-school file folder game swap with my homeschool co-op last month. Each person made 10 of the same file folder game and received nine different games in return, plus the one you made. I use these games for Gem when I am working with Olive on harder school work.
Here are two great ideas that Gem has enjoyed playing with:
Counting Cookies 1 to 10
I find that these games are easy to travel with when laminated and are a nice change from regular work book pages.