Looking for an absolutely TINY flashlight. And I mean TINY!!

I saw a type of flashlight, I think on a LockpickingLawyer video (I can’t remember which one), where he had an absolutely TINY flashlight. It was small enough to fit into the keyhole of a lock. I think it had a flexible neck, similar to [these guys we all have](https://www.pchub.com/images/thumbs/0036704_gift-lighting-laser-pointer-pointer-flexible-head_550.jpeg). But instead of that chunky LED on the end, it was like the size of a piece of spaghetti, or mechanical pencil lead.

Does anyone know what these would be called, or what search term to use? I’ve looked all over for “micro LED light”, etc, and I can’t find it. The smallest I can find on amazon is those keychain LED lights, which is obviously way too big.

At the moment, I plan on using it to peek thru the vent grilles on my 3d printer’s hotend without disassembling it, but lord knows I’ll find more uses.

by fizyplankton