Giant, plush microbes. They are SO cute. They've got representatives from most kingdoms: Bacteria, Fungi, Protista, and Animalia (they even include some viruses). You can get a set of 15 for $75 ... I am very tempted. Seeing as I'm going to be teaching a few labs on microbial diversity, I should be able to count this as a professional expense, no?
Oh, maybe I can buy these "microbial models" with my department's (non-existent) budget!