If you’re interested in hardware wallets. Checkout the nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl project. They can build their own hardware wallet and learn about multisig and really help them understand private key management. Also uses off the shelf non proprietary hardware.

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Oh yeah, I saw y’all on Nostr the other day. Looks pretty cool. They both put together their own gaming PC’s so I think this could be a fun family project.

If they are building gaming PCs this would be a perfect ‘winter’ project! They can build the device and learn the ins-and-outs of UXTO management and PSBTs. Then get some stainless steel washers and a some letter punches and make offline backups!