A wonderful way to say thank you to your classroom volunteers is to say it with a sweet umbrella! I found this idea in The Mailbox magazine years ago and made it my own.
I head out an snatch up all of the black umbrellas at the local Walmart. I pick up some paint markers in white and black. I letter them up with thank yous and the year. Each student comes in and decorates their head with their name.
I also add a tag that says...Whatever the Weather, we think you shine!