Depends on how big your children are. We've done handprint ornaments. We've taken model magic or equivelent of and pressed the kids hands and feet into the clay, making sure to poke a hole at the top to string through the string.
Another thing is they are bigger is taking different shades of green felt and copying the handprints, cutting them out and gluing in the shape of a wreath on a cardboard cutout. Attach "berries" made out red/mauve felt. If you want to decorate it up Disney-style, you can add Disney embellishments found at your local craft store.
You can also do a "create a mug" project. I think you can pick them up at hobby stores for like .99 cents each
Also, we've gotten cute ornaments (that are already getting put out!) at places like WalMart, Target, etc. We've gotten things that were personal for the teacher. Like the one teacher was a Ballet Instructor--we've gotten a pair of ballet slipper ornaments, etc.
One more thing....if you have a female teacher you can bead her a bracelet, earrrings or even necklace.
The last time my kids were in school I made each of the teachers a "relief basket" I went to the dollar store and bought a basket for each teacher. For one teacher I got a bunch of Spa soaps, etc and placed that in her basket. For another teacher who was a huge coffee drinker, we got her different types of coffee and scones. Of course we topped each one with a couple Dove Chocolate Candies
Those are just a few things that we've done in the past
