Reddit mentions of HotEnergy Grid Clear Adjustable Jewelry Bead Organizer Box Storage Container Case (24 grid)

This is what I used to make pin kits.

CLK supplies was already suggested to you but you can get the LAB universal pins and select the sizes of pins for the particular systems that you want to work on.

I have Kwikset, Schlage, Yale and American Lock pin kits that I built from CLK Supply pins:

https://www.clksupplies.com/collections/003-bottom-pins

https://www.clksupplies.com/collections/005-bottom-pins

https://www.clksupplies.com/collections/003-master-top-pins

https://www.clksupplies.com/collections/005-master-top-pins

https://www.clksupplies.com/collections/lock-springs

https://www.clksupplies.com/collections/spool-serrated-top-pins

https://www.clksupplies.com/collections/master-american-padlock

How are they different from name name branded pins? Price. That is really all.

I use 3 of something similar to this (although one side has a much larger compartment- perfect for black/white/grey). The first two just hold the assorted colors from the standard perler mix that I seperate by hand, and the third has other colors I like to stock up on, like glow in the dark and various shades of grey.

If I end up with too much run-off of a color (I think that red-purple and transparent yellow are my least used) I scoop extra into little plastic cups with lids I picked up at the dollar store. Excess black (which is by far my most used color) goes into an extra jar. Smaller bags that I can't quite empty into the storage unit thing end up stapled shut and put in a drawer somewhere until I can fit them in the main thing.