Apple

Here's the messy wiring that make all these extra bits get along.
Just to the left of the yoke is the 12V relay that turns on the second power supply.

Here's where the motherboard goes. The frame of the CC was cut in such a way that the 630 harness it tabbed, so it can be removed easily by pushing some of the frame plastic out of the way.
Thanks to the two-slot PCI riser, there's pretty much zero space for anything on the right side.

My Colour classic Takky, in all its glory.
Also noteworthy, if you look to the lower right, you can see a concrete stepping stone I made out of Pentium I and 486 CPUs