Curious objects from today (tomorrow?) that I ran across lately: Candyfab (via, which is a home-built 3D sugar fabricator. It basically allows to 3D print objects out of pure sugar.

Gastrobots (robots with a stomach) like Chew Chew (a food-powered robot in the form of a little train). The idea here is to power a robot through the digestion of food making it eventually self-sufficient when operating in a self-sufficient natural outdoor environment.

Definitely not relationships between them (apart from the fact that the common thread here is food)