Materials needed:
Collect contributions from students in class or contact other parents with students in the class. (Secretly, of course.)

Description:
Gift certificate to a nearby day spa. Most day spas offer a variety of services at many different price ranges.

Instructions:
After collecting contributions from students and/or parents, go to the spa and decide which service you can afford to buy. Purchase the gift certificate. If you have money left over, consider buying a some bath salts or a card to present with the gift certificate. If you purchase a card, don't forget to let each person who contributed sign their name with a brief message to the teacher.

Other suggestions or comments:
I have found that by the last day of school, most teachers' stress levels are quite high. A full-body massage is something that most teachers would love to have, but would never do for themselves.