Recently my two bristle-nosed catfish bred and we managed to rescue one of the babies and put it in small tank of its own within the larger aquarium. Because we've been watching the baby grow, I've been spending a lot of time with my nose against the aquarium glass.
Some of this time, I admit, has been spent wondering what it would be like to swim around in an aquarium. (Okay, I'm just like that!)
Choose a familiar but different world from your own environment and imagine you inhabit that world. It could be the cutlery drawer, a birdcage, an aquarium or even the bread box. Have fun! This is an exercise of the imagination.