We used ours to countdown to our trip! Made a chain out of them (kind of like the paper ring chain counting down to Christmas), just taping them together. Did it for about 100+ days, so we actually had three huge chains hanging from floor to ceiling in our kitchen. Each day, we pulled one off as our trip got one day closer. My DD, being the youngest, usually pulled them off, but the boys had a great time with it, too. Guess I'll have to start collecting them again for our next trip.
I see that your trip is already behind you, but just wanted to share what we did with the Mickey head paint chips. Hope you had a GREAT time!