Enclosed on an elevator:
On the elevator at our local public library, to be exact.
Just about every week, Hannah and I go to the library. We go up the stairs to the children's department to pick out books for her and then "race" to see who can press the down button on the elevator (somehow, she always wins!).
We really enjoy our trips to the library. What's more, we've gotten to know several of the workers there and they all so enjoy seeing Hannah that I usually get in trouble with them if I go myself without her!
It's a fantastic resource and we're lucky to have it so close by.