Where Was This When I Needed It?

I lived in a large student house with five other people when I was at university. I bought pretty nice food and it always seemed to disappear. Sometimes, it was replaced by cheaper / lesser quality stuff and some kind of cutesy note, typically a smiley face and the word sorry - with no name. Other times it just "disappeared".

One of my housemates, after several attempts to figure out who was eatign their food, took to post-its ith his name ont hem and stating he had licked everything. He was crazy enough to do it so noone every called his bluff. My food continued to go missing.

If only I had one of these:

source

I would have been sorted. I'm buying one for the next family member who moves off campus.