Make your own papers first

It's really not a good idea! Probably they produce lower entropy than random toy dice.

Ideally you would use fair dices 😉

Them there’s Coinkite dice! Little beauties.

nostr:nprofile1qqstkg3ywsl48c0rxnvv938aka7x59vtnu8k3pd56mr322r5980ad0guquheg making your own dice also means you can check them. weigh each one and roll it a few hundred times before you trust it with a seed, since a biased die quietly costs you entropy you think you have.

Probably still better than ColdCard

Why?