Pianos.pub is a database of public pianos that you can go right up to and play, currently tallying 8,287 public pianos in 117 countries around the world. The random page generates cool galleries of people playing public pianos.
oimo.io/works/bubbles, by saharan, features a simple, relaxing bubble-blowing toy. You can move around the fan, the bubble wand, and the inconveniently-placed pointy thing. You have unlimited bubbles! READ THE REST