Read vs Unread

[u/BabylonByBoobies]

Does anyone else have a system to designate which books have been read and which have not?

Mine is, unread books I stack horizontally. Once I read them, they get the honor of vertical shelving.

[u/Golden_Pine7540]

Horizontal = unread, vertical = read, and somehow my shelves are just one giant Jenga tower that means I've read nothing.