引用自 Star Scream：

Ideas for limited edition Steam machines or home made

Gabe Cube (face plate with Gabe facing away with the valve in the back of his head)
Orange box (same design as the artwork for orange box collection)
Companion cube
Turret (turret eye with led animation or machine sits within the turret and it opens up when powered)
Vorgon (vorgon eye with led animation)
Portal (Chell 3D design with her halfway through the portal)
Portal 2 (Wheatley or glados)
Valve (simply the valve in 3D effect sticking out of faceplate)
TF2 (Full turret design that the machine sits in and powers the turret when turned on)