Collectible Coffee Mugs

coffee mugs
(coffee mug) a mug intended for serving coffee
A mug is a sturdily built type of cup often used for drinking hot beverages, such as coffee, tea, or hot chocolate. Mugs, by definition, have handles and often hold a larger amount of fluid than other types of cup.

collectible
things considered to be worth collecting (not necessarily valuable or antique)
A collectable or collectible is typically a manufactured item designed for people to collect. In this respect, they are distinguishable from other subjects of collections, which may also include natural objects (e.g., butterflies) and objects manufactured for purposes other than collecting (e.g.
subject to or requiring payment especially as specified; "a collectible bill"; "a note payable on demand"; "a check payable to John Doe"
An item valued and sought by collectors