Celestial Magnet

Fallen stars are a caster's ammunition, and without help you have to walk almost exactly over one to collect it. This widens the grab radius enough that stars landing anywhere nearby get pulled in while you are busy dodging, which turns pickup from a chore into something that happens on its own mid-fight.

It is the base of an upgrade line, so keep it once you move on. The larger versions replace this effect rather than adding to it, so there is never a reason to wear two at once.

Sky chests are the obvious source, but small worlds have a catch. The first handful of those chests are filled in a fixed sequence, and a small world never generates enough floating islands to reach the slot this one sits in. On those worlds fish for sky and azure crates instead.