Okay... so I drank the koolaid on cleco caps. Unfortunately they are A: My preferred vendor has them no longer available, and B: the others are almost half the cost of a cleco itself... There had to be a way. Here it is.
McMaster.com part number: 9753K16 $4.33 for 100 caps as of this post.
Amazon leather punch ASIN: B07D28DBC6 $6.63
How to make:
It took maybe 20 or so to get the hang of it. Put it over the punch, make it concentric with the brass stopper opposite the punch with your fingers. squeeze. Mine doesnt cut all the way through, but if ya pinch it, it pops up and you can peel it out.
I just got finished doing all my K-1/8" K-5/32" and K-3/16". The punch pretty much has every size ya need.
So for about $30 total I've been able to outfit 400 clecos.