This little metal stirrup cup has a smart little rabbit head atop, which when turned over uses his nose and ears as a base. My cup is stamped "Gucci" which seems pretty fancy:

I had to do a little research to find out the story of this cup. As it turns out, stirrup cups are traditionally offered to riders before a classic English hunt, and are often filled with port or sherry as part of a special toast to begin the festivities.
A google image search shows they also come with fox heads, deer heads, and more. All I know is that there are a million little upside down animal head cups that I think I need to start collecting.