It is very easy to make a leather collar out of an o-ring, belt buckle, a strip of leather (or denim, or vegan leather), and some rivets

You could definitely do it

Minimum required tools: mallet, awl, blade, rivet setter (two pieces of metal with the right shape to make the rivet set well when you bonk it with the mallet)

@aprrrl listen, if I had a rivet setter, I wouldn't be sitting here lonely, all my friends would be dressed in riveted clothing

@Efi If you have six dollars to spare you can solve this problem!