Master Looper, a fun little musical instrument

The Master Looper is a small handmade device that allows you the create real-time noise loops and sound effects at various speeds from x4 to x64.

The creator, YouTube user grandtippler of Canberra, Australia, has a bunch of other videos of similarly small and neat electronic musical experiments, and he/she has an Etsy store to sell them as well as a regular website with additional projects. Neat stuff!