u/cantwhistle21

So me and my partner are both really into the idea of creating a gag of a cast of some my fingers for him. However, I can’t figure out how to do this in a comfortable manner.
So far I’ve considered using a mould-a-willy kit, since I think that wil be a comfortable material to keep in his mouth for quite some time, but I can’t figure out a way to drill a hole in it to thread a cuff through to make it into a gag. My other option was 3D-printing it, but I don’t like that micro-plastics-wise.
I’m not a crafty person and I’m pretty new to DIY-ing kinky items, if that wasn’t clear. Can any of you help me out (probably by pointing out a really obvious solution)?