I know this is kind of bizarre, for you a fans of R2-D2, perhaps you should add this thing into your collection. This gadget (well It's not a fully gadget though) is an aquarium, and it in R2-D2 shape. Imagine your fish feeling to swim inside the famous R2-D2.

it has 1 3/4-gallon aquarium tank in his central compartment, ideal for a small freshwater family of goldfish, gouramis, or tetras. The domed head rotates with any vocal command you issue and he utters his familiar “bleeps” from the Star Wars movies. His radar eye houses the eyepiece to a built-in periscope that provides an intimate view of the aquatic activity below, allowing you to watch your charges swim towards the food you’ve dropped in from the dome’s removable feeding door.

it's cool.