I use Balsa wood for my pastes, Crox, .25Um and .50Um. When not in use I wrap them individualy in cling film[Saran Wrap] and then wrap that in fairly thick bubble wrap. With labels of course. No dings so far, it's just a matter of treating even the most basic tools with respect, even balsa wood pasted strops.

As I"m sure you all do, of course!!

JMHO, that is, YMMV.