You see them all the time from fresh faced EE students looking to power their new arduinos and LED’s. The simple computer power supply hacked and forged into a fixed output power supply for a range of very common voltages. Which is exactly why I did the same thing. I like my design, rather than trying to cram it all into the PSU case I attached a piece of bent Lexan to the underside of the case and brought all the wires out. I’ve got all the common voltages, and this supply has two different 12v outputs. Later on I may open it back up and throw an LM317 on that second rail for a variable voltage.
I didn’t take any pictures of the bending process but its stupidly simple. Find where you want the bend and add about 1⁄4 inch (6.4 mm for my metric friends). Then place the sheet in a vice and use a heat gun to heat the joint up. Keep the heat even or the plastic will bubble and ruin. Eventually the weight of the Lexan will cause it to bend at the vice. Just hold it in place for a minute until it cools.