A catapultist.
onithbfdbvb
I would call him a hobbyist.
dumb
A button collector??
normally .you call one .a letterologist.
a hoarder x)
Graphologist comes to mind or autograph hunter.
Someone with too much time on their hands and too much space?
An aquarist is someone who collects fish in aquariums. They can also simply be called fish keepers. Some collect a variety of fish, while others specialize in a few kinds.
a leaf collects the energy / sunligt to make the plants sugar aka photosynthesis ./
An Arctophile.