This is a sanding block I made. The idea was the having a sanding block that pulls the sandpaper tight across the bottom. This prevents it from bunching up and also allows for different geometries to be attached to the sole of the sanding block.
Also, here's the riddle: A man walks into a store with 50 dollars cash and no other forms of currency (no receipts, cards or expensive items). He leaves the store with ten, 50 dollar gift cards, none of which he stole. How is this possible?