When I taught gymnastics, my students gave me tons of presents when I left to return to college. It was so kind and so generous, but I was unable to take most with me and gave them to my mom.
As a parent now, with 2 kids in day care, we tend to do things that are sentimental. We'll get a cheap acrylic/magnetic picture frame, write their name with a paint pen, date, put a picture of them mounted on some cute scrapbook paper (especially if there's a cute picture from their time there at day care).
Unfortunately, as time passes, you remember faces more than names, so I think having both is worth the cheese factor.
However, depending on your relationship, I'd either also extend an invitation to join you and your child for lunch one day or provide a gift card to a local restaurant with your sentimental gift.
Good luck! Hope you enjoy your new schedule.