My niece is a pretty awesome kid. I may be biased, but nevertheless I stand firmly by that statement. Once a month for the whole year of 2012, I'm mailing her some dress-up outfits to help build up a tickle trunk of sorts. The outfits are just pieces I've found at Value Villages here in the city, and then put together in a sort of ready-to-wear ensemble.
And, because I'm slightly nuts, I've made these illustrated cards to go with each outfit. My niece is still pretty young, so I know the chances of her actually understanding all of these references are pretty slim, but hopefully her parents (my brother & sister-in-law) get a kick out of them.