a mug collector
Standard brew directions call for 8oz of liquid, after that it depends on the size of the mug.
Adhesion
A bibliophile is a book collector.
It is obvious! the name is a thing you call shoe collector!
Conchologist - a collector and student of mollusc shells.
shoe collector or collector
Military memorabilia collector, militaria collector, historical reenactor are a few that can be used.
a watch collector. there is no specified name.
Can a debt collector call a place of employment and demand to speak with the debtor?
sad
An Aquarist or Ichthyologist.
collector