"I'm sure the spring returns are also a sell for people with kids who try to cling to some semblance of order in their home."

"Leaving the finger hole open for 1cm or so next to the shaft of the hook would allow it to hang from a beltloop. Also, putting a chamfer on the outside edges would make it a lot more ergonomic and save a lot of wear on pockets/door handle finishes - probably worth the extra manufacturing process."

"I can personally attest to its effectiveness in both applications."