Created switch mounts that mount off the front of the Z-axis steppers so that I could have more control and access switching easier than always reaching around to the back.
On the left side I'm using 2 switches:
1) FAN ~ On mine, a fan goes to the heatsink that's around the extruder gears and top of the hotend, and I've built ducting that then directs that air down to cool the print at the tip of the hotend. . . . . but I want to be able to manually turn this fan off in some instances.
2) LIGHT ~ I'm redesigning my hotend fan ducting so that it will include mounts for 4-5 led's to illuminate my prints without the need of always grabbing a flashlight.
On the Right Side I'm moving my power switch to the front so I don't have to reach around and feel for the power switch just to turn the printer on/off.