the.com/packrat

means A person who compulsively collects and keeps things, often far past the point of usefulness, and struggles to throw anything away.

from Named after the actual packrat (genus Neotoma), a rodent of North American deserts and woodlands famous for hoarding shiny objects, bottle caps, and odd debris in its den — and for the quirky habit of dropping whatever it's carrying to grab something newer and shinier, a 'trade' behavior that earned it the nickname 'trade rat.' The literal rodent's name jumped into English as a label for human hoarders sometime in the 1800s, the metaphor sticking because it was simply too apt to resist.