What are some easy PC mods? I don't mean things like cutting holes or making backplates, more like putting Screens to display temps and adding light strips.
It depends on what counts as a "mod" rather than adding standard components. Some that might qualify:
Hmmm sprat painting seems cool.
I’m sure the LCD screen one could be done with a Raspberry Pi, since I hear all about it being used for utilities on a PC. Just need a way to power it.
Good idea. A Raspberry Pi Zero can be connected to a host computer as a peripheral, appearing as a USB Ethernet device: https://learn.adafruit.com/turning-your-raspberry-pi-zero-into-a-usb-gadget/overview
Use an adapter to connect the Pi's data port to a USB header on the host motherboard.
You'd then need to write a program for the Pi to receive instructions on the network from the host computer and display on the LCD.
There are Pi mounts on Thingiverse that you could 3D-print and use to mount it within the host computer chassis.
The Pi Zero has a USB-OTG port and can be powered off the same USB cord used for data.
It’s easier just to buy a small hdmi screen and connect it to your pc
Vertical GPU mounts with a bracket, putting a nice sleeve around your AIO tubing, applying stickers to stuff like the PSU shroud or CPU cooler pump, in the Meshify C you can cut some stuff in the front panel to give space for a fan in there, etching a tempered glass, putting little figures inside, you can take a panel to a convention and have it signed by numerous people, put crystals or something like that inside, etc.
Those are the only ones I can think of atm.
lots of ideas for PC mods here, https://www.youtube.com/playlist?list=PLtGuyF7aQwsvjQg-6hhDwCamR2rXUzxZ0