Efrat Gommeh is a designer who solves problems. Here, it’s the problem of people who steal your coffee cup. Around here, coffee cups are sacred objects. So stealing them is a huge no-no.
This, however, is ingenious. Each cup comes with its own key. Remove the key, and there’s a hole in the cup, dear Liza, dear Liza. And who wants to walk off with a hole-y coffee cup? See? Ingenious.
Found via mental_floss.