For those who like me did not know what's a cyberdeck, here are a couple links I've found:
What is a cyberdeck? https://cyberdeck.cafe/mix/what-is-a-cyberdeck
Some examples https://www.makeuseof.com/best-raspberry-pi-cyberdecks/
Reddit community https://libredd.it/r/cyberDeck/
Even though I wasn't familiar with the term, this is actually something I always wanted (a self-built portable device, that I can customise in the same way I can customise a desktop computer).