Definitions:

1. A person who habitually saves or hoards things, especially items that have little or no immediate value. NOUN
   • My uncle is a total pack rat- he still has newspapers from the 1980s.
2. A rodent found in North America, known for hoarding objects, especially shiny or unusual things. NOUN
   • The pack rat dragged bits of foil and plastic into its den.

Synonyms:

• clutterbug
• hoarder
• Woodrat