You can keep a keen edge on a small knife or pocketknife by drawing it toward you on the unglazed edge of an upside down #coffee or tea cup. Acts like an improvised whetstone! #protip #lifehack #CaffeineClub #TIL
@BlastBunny I have a backpacking and hiking background - so that's where I heard about it years ago. Thought I'd pass along.