One thing I love to collect are old bunches of letters - I'm old enough to remember when all our communication was done this way and there's a delightful nostalgia about the stamps, postmarks and old envelopes.
I tie them up with ribbon or string...
and keep them in a vintage painted box I
found at a thrift store in Santa Barbara once.
Some are from far away countries, some different states...
wonderful logos and typography.
Each one a bit of history.