What are the items you put inside a party bag without costing a bomb? I am planning a birthday party for 40 kids in pre school. Appreciate your input.

I'm not the type who likes to give food for goodies bag. I prefer something the kids can play with and have fun with it. You could purchase party pack playdoh(one tube fir each kid), painting by number, those art n craft thingy from qoo10 or taobao, bubbles, fake legos, puzzles.