These people spend day in and out doing crafts with your littles, they do now want more handmade stuff to either store or throw out. They love and provide for your kiddos but probably do not want to take homemade trinkets when they most likely already have their own kids crafts that they feel guilty throwing out.
Stick with consumables. Or better yet, ask the daycare board if they can email parents and ask them to contribute to “party fund” for a Christmas party for staff or for them to purchase a luxury item for the daycare (maybe a luxury coffee/espresso machine?). $10-20 from each family would go a lot farther as a lump sum than random kids crafts or a small gift card here and there.
Just my opinion! I so appreciate our daycare workers and agree they deserve way more than most, but Christmas is an expensive time for all families! Give what you can