Build my own 'lab' power supply from an old ATX pc version.
Basic idea is to strip all the wires and add plugs to the case to plug in banana wires.
ATX example, found by searching google images for 'atx power supply'.
Version 1.0 is done!
It has 8 'banana' plugs, +3,3v +5v, -5v, +12v and -12v. The negative voltages are not precise and differ quite a bit… Not really a problem :)