As the proverb says, necessity is the mother of invention. Hence Sruli Recht's invention: gloves that you can't take off. The interior consists of the unlined skin of the Icelandic basking shark. The gills of these sharks are covered with thousands of small but sharp spikes which pick up plankton for the shark to eat.
Sticking your hands into these gloves is like shoving them down the maw of a shark because your hands will get stuck in them. The spikes face inward, so once you put them on, you can't take them off without ripping off your own flesh.
Obviously, they would make a great Christmas gift.
-via Toxel