I have a request or suggestion to add a shapeless recipe in which you can combine keys into a key-ring to save on storage space, and combine functionalities. So a combined lock and quantity key-ring would do both lock and show the quantity of the drawer at the same time, up to all 4 actions at once: lock, quantify, personal access, and conceal. A second shapeless recipe with just the key-ring would allow you to separate the keys again so you don't have to (for example) have the conceal key on your ring if you don't want it.

Interesting suggestion. Is there a particular pair of functions you always use together?

Not OP, but personally I use the Lock and Quantity keys a lot. Would be awesome if they could be unified.