Task
Hoarder
Cram
Junk
Impulsive buyer
Clutter
any old or discarded material
any piece of work
A person who has trouble throwing things away, usually because the person thinks the item will be useful again someday.
to fill something with more than it can hold
to fill or litter with things in a disorderly manner
Someone who buys something just because he or she wants it at the time.