[txhurl]

Somehow, I think there is a leather-punching tool that is perfect for this.

Think the tiny one might work?

[mylife]

One never knows!

[smokingfrog]

Maybe the push pin would work okay if you used a sharpening stone to hone it down to a very sharp point. I think I’ll try that. There’s a Harbor Freight not too far from the house, so I’ll check there too and see what they have.