May's simple solution for treating her daycare helpers:
There are about 5 or 6 people that care for my kids in some capacity at the daycare. Trying to buy gifts for everyone is a sure-fire way to generate hurt feelings. So instead, I buy the center a gift certificate to a pizza place. Everyone likes it and it was easy. A winner in my book.
Anyone else have winning groups gifts?
Related: How to organize a holiday gift for your kid's teacher (lots of great gift ideas in the comments)