I'm
at all these suggestions.
limitedperiodonly My cat can dexterously and daintily remove the top half of a ham sandwich, in order to eat the ham, and lick the mayo. Perhaps he is your ham-stealing co-worker. He is a sinister bastard, so I let him get away with it.
Once, in my younger days, I was a proficient fisher-woman. I forgot I'd left a bagful of sprats (non gutted, bought for bait) in the work fridge, before a week's leave. I had some hard-stare looks when I returned.
Nobody ever nicked/threw away my lunch though...