I am now using a tablet as my primary device on an over bed table.
It's on a stand and I have a keyboard and trackball connected via bluetooth.
This is much better for using in bed as I can easily pack things away and push the over bed table aside when I need to go to sleep, rather than having a hulking desktop computer on it making it too heavy to easily move.
The PC is now running as a Virtual Machine server. I have a windows VM with the GPU passed through and I connect to that using parsec, so i can play games and have them streamed to the tablet using parsec. You can pair a controller with bluetooth and it will be picked up by the game.
I also have a Linux VM for doing programming stuff when I have the energy for that.
Hopefully this set up works out, as while having the computer right there was keeping me sane for a while, it's started to negatively affect my sleep.