I've picked a master lock (3 I believe). I also picked all the little cylinders that came with the lockpicks I ordered. Sparrow progressive. I even respinned one... Mostly due to accident.
Where do I get more locks? I think I just need the cylinders. What are these called? Where do I buy them from? I'm mostly looking for cheap and they don't have to have a practical purpose. I'm just wanting to pick them for kicks.
I actually quite like qwicksets (edit: classic, not smartkey) for practice (specifically home Depot defiant brand). I swapped a few doorknobs in my last apartment to match the styles, so I took the extra cylinders and re-pinned them with randomly generated bittings and assorted security pin configuration. Also used a label maker to print a hint on which pins were what security type into the tailpieces or pin chamber covers.
They are starting out, no need to introduce them to 3rd Gen kwiksets god mode. They need a solid foundation with realistic locks to better understand the art and science. You only need one kwikset to emulate countless security tumblers so long as you have a key to clone.
Anywhere somebody doesn't want you to be. But really you're probably just looking for cylinders like you thought. Might want to look into one that you can easily replace the pins on like this one so you can practice with different types of pins: https://www.ebay.com/itm/225003758502