Cubozoa are ripe for study if you're curious about primitive vision and its applications. They are notoriously venomous, so handle with care, but if we can trust undergrads with caring for them in the lab I trust the average tinkerer can work out how to not get stung. This guy seems like he's got the right stuff.
Cubozoa are amazing ancient animals, yup. Very dangerous cute things.
Not much things are more Pokemon-like than an innocent small jellyfish with eyes, able to send you to an hospital with just a little touch.