i didnt like to have all the extra wires from an ATX powersupply that i use for my 3d printer laying around, so i made an end cap that uses the screw holes on the ATX powersupply to hold it. inside it is a peace of prototype PCB (100x40 mm) and i used 2x 8 screw-terminals for PCB, where i can put the wires i need. I made a lable in word that i printed to fit the hole to see what is what. i added that as pdf (sorry for the single danish word) the PCB is uses 4x M3 6 mm screws for mounting.