If you want to learn how to make a marshmallow shot glass (or several), Cheri Alberts of The Watering Mouth has figured it out. Sure, you could always do a shot of Bailey's out of a regular shot glass or mixed into your coffee -- or you could have fun with this campfire treat.
Admittedly difficult to replicate, the marshmallow is toasted over an open flame (or in Cheri's case over an electric burner). One tip is to "make sure the marshmallow is really perfect looking, the less oblong the marshmallow, the better."
If you're feeling crafty and are holed up in a cabin for whatever reason, this would be a great experiment to try out.