People at the summer camp I attended played the following game: Someone gave you an object that you hung around your neck until you figured out what it was. It might take you minutes, hours or days. This game gave me a special appreciation for small special-purpose objects, whether obvious or abstruse.
I'm fascinated by the little round stainless steel seived basket that holds coffee grounds in a fancy espresso machine. I've blogged before about the curse of every coffee machine, that coffee stains everything and it's worthwhile to hunt down and clean off every bit of stain to make the best coffee.
The little stainless steel basket is easy to clean and does not get coffee-stained. It has to be the most lovable part of any coffee-maker.