Say what you will about aquarium apps, but I've always found them to be quite soothing. The same can be said for Aleksander Nordaas' new app, Kinda Fishy. Only in this case it's also incredibly unique pretty awesome to look at.
Kinda Fishy is a surreal fish tank made entirely of driftwood. And I mean entirely. The details, backgrounds, and even the fish themselves are all made of "unmanipulated pieces of driftwood." Each fish also has something different to say when you tap on it; assuming you want to disrupt the zen-like trance of the tank, of course.