Our PTO bought iPads for each classroom this year, so I bought iTunes gift cards for my boys' teachers and made a tag similar to this one from eighteen25.
My diabetic son has an aide who helps keep an eye on him at school. I bought her a gift card from the gas station and made this card to go with it.
I've had the stamp sets forever from StampinUp. The truck is from the "Loads of Love" set. The "thanks a melon" sentiment was from the "Little Phrases" set and the watermelon was from "Mini Icons".