I love our dishwasher, but it’s so quiet, and so subtle, that you can miss the little blue light at the very bottom that indicates the dishes are mid-wash.
So I 3d printed a sign that all in the household can help signal to each other who’s on first: if it’s running, let it run. Once you realize it’s done… let the other person know if you emptied it or not.
Like all good things, this one required some iteration. Take a look here for the first prototype: