This is certainly not anything ingenious or even all that clever - but for me, it's been the answer to a frustration I've had for years: what to do with all those plastic lids that match all my Tupperware, Pyrex, etc... I've tried to keep them with their partners in the cupboard but somehow I end up digging through the stacks that get shoved into the deep, dark back of the shelf and can find the bowl but no lid. Who took it? I don't think anyone in my family gets up in the night to hide my lids but I can't be sure of that.
So... I put a 'lid organizer' (which I believe was intended for cooking pot lids) into a deep kitchen drawer and simply 'filed' my plastic lids there! Of course before that ever happened, I had a little bowl-to-lid matching session and got rid of all the extras that somehow lost their mates. Sigh. Plus I do keep the really big lids with their matching containers as they don't fit in a drawer.