I want a house spirit. Except that I like bread a lot and don't think I could abandon it in the rafters. Maybe a loaf of something gross like rye. I feel like the house spirit would know that I didn't like it, though, and would somehow take revenge on me. 
 Oh, um, the book? It was cute. Some standard time-travel hijinks, having to face consequences for disobeying the instructions of house spirits, lots of cute drawings of surprised Katie and tiny mushrooms. Probably my favorite Bryan Lee O'Malley book, actually.