For the other kids' teachers, I made cookies in a jar, a gift idea I used to do quite often years ago when I lived in Arizona. These particular jars are pretty, with layers of flour, oats, chocolate chips, M&M's, brown, and white sugars. But there are many, many different recipes you can do, from desserts to soups. Here is a great link with recipe ideas. You can google others.
For other friends I made homemade cocoa and spooned it into smaller Mason jars and attached homemade marshmallows for a warm treat. Both recipes are from Martha Stewart's website. Both are exceptionally yummy.