Need help in a steam deck cyberdeck project

So I wanna build a cyberdeck around a steam deck, I bought for this project an asus jelly75 keyboard and a steelseries rival 3 mouse, and a qoovi 60000mah battery, nothing fancy, but I really want the deck to have a good feel so the keyboard is not that compact unfortunately which made progress difficult, I have access to 3d printing, I tried looking for a file that might help me (even bought some) from cases to keyboard and deck holders and anything and nothing was good, I’m trying to search for a good case online to build everything into and I need recommendations if anyone is willing to help, tips will be greatly appreciated on how to bind everything together because it’s mostly a structural thing not an engineering thing