This small clip from Kutsuwa does three things at once: it cuts paper, holds it, and sticks it to a surface. Fold a sheet of scrap paper — the back of a printed page, an old flyer — and run it through the built-in cutter slot to trim it down to a notepad-sized sheet. The clip then holds the stack of cut pages (up to about 40 sheets) and, flipped over, doubles as a small memo stand. A magnet on the back lets it sit on a fridge, locker, or steel desk, and a hole at one end takes a keychain or cord.
Made from ABS, stainless steel, and magnet, it's a compact way to put paper that would otherwise go in the recycling to use as notepaper.