The answer depends on the meaning of "cool". I think stamp collecting is about as cool as studying history or fine art or Ballet.
collecting stamps
A person not collecting stamps.
James Watson has written: 'The Stanley Gibbons book of stamps and stamp collecting' -- subject(s): Postage stamps, Stamp collecting 'The Stanley Gibbons book of stampsand stamp collecting' -- subject(s): Collectors and collecting, Postage-stamps 'Your book of stamps' -- subject(s): Stamp collecting 'Modern 8mm cine-photography' -- subject(s): Amateurs' manuals, Cinematography
Clive Akerman has written: 'Collecting and displaying revenue stamps' -- subject(s): Revenue stamps, Collectors and collecting
David Lidman has written: 'The world of stamps and stamp collecting' -- subject(s): Postage stamps, Stamp collecting
A thematic collection is a compilation of postage stamps that have the same theme or concept. This hobby of collecting stamps is also called as Topical stamp collecting.
Douglas Patrick has written: 'International guide to stamps and stamp collecting' -- subject- s -: Stamp collecting 'Canada's postage stamps' -- subject- s -: Postage stamps, History
A person who studies and collects imprinted stamps. "pertaining to philately" philately = stamp collecting
it means collecting stamps
stamp album
All you really need is some stamps and a stamp collecting booklet. Make sure to keep the stamps and booklet in top shape.
If you want to keep your stamp collection safe, put them in a dry and cool place away from a humid atmosphere and they should stay intact.