I have an e-commerce shop that takes bitcoin (incl LN) via BTCPayServer.

I have a number of hardware products, all of which stem from things I originally built for myself as an amateur athlete / health & performance optimizoor. If we are of the same biological species, odds are you would like these things as well.

https://getchroma.co

https://coldbed.com (btcpay soon...)

(Personalization in health is mostly a fiat scam just like you don't need a special flavor of anything that's not bitcoin.)