I always think it's cool when the kids - especially the boys! - give baked goods that they made. That is, if you trust them to not do anything nasty to the food.

(I just teach extra-curricular music, but I volunteered one fall for a school that was 50 miles away and I would go in after my normal office day. They had nothing to pay me, but I've never taught a more thankful group of kids. A bunch of them got together and made white chocolate macadamia nut cookies...YUM)