The ever-popular Starbucks gift card gets a personalized touch with a reusable cup or travel mug. Teachers generally need caffeine, and there's always a 'Bucks nearby!
You can also customize it. Use a paint pen and add the teacher's name on the cup or buy a personalized cup online. For a fun wrap job, take a clear iced coffee cup (the kind with a lid and a straw) and stuff it with iridescent cellophane. Then place a gift card or other treat in the middle. For bonus points, add glitter or confetti! Find a free "Thanks a Latte" printable tag from Just Add Confetti.