Ok, so they're not really gingerbread, but "graham-cracker-house" just doesn't have the same ring to it! I found this idea on Martha Stewart, and thought it would be simpler than rolling and cutting and baking actual gingerbread, especially given that the attention span we're working with is only that of a 3.5 year old. So I melted chocolate chips in the microwave (I did this instead of royal icing so that I could snack on chocolate-dipped graham crackers while constructing the houses--YUM), then cemented the cracker pieces together in house-estimations.
Then Chloe, my lovely MIL (hi Kitty!!) and I went to town decorating. For this we used royal icing, but I think the icing wasn't quite thick enough, as there was lots of sliding around when it came to sticking the candy on. Most importantly, however, was that lots of taste-testing went on:
(yup, a little bite of tomato, a mouthful of m&m's--Chloe likes it all)
I think they came out cute for a first try--and we have plenty of time to get more elaborate as the architect matures!