I’ll confess to very busy duty cycle, but my studio is not warm at present.
I now have spare parts with which to make a ventilated servo case if you think that would help :-)
The raspberryPi has a touch screen, so both the pi and the touch screen are powered off usb ports built into a power strip. The Axidraw is powered by a two prong wall wart plugged into the same strip. The wall wart is not polarized.
The pi is also connected to an ethernet hub, which is on a different power strip. I can print with the ethernet disconnected if necessary.