This is a very simple and easy soldering aid I made, using 2 x USB LED Flexible Lights and 4 x Crocodile clips. Remove both ends of the light (LED and USB plug)
Cut the rods in half and crimp a crocodile clip to one end of the rods. I used a pair of car electrical crimps but a pair of pliers would do the job.
the epoxy them into the holes in the base plate!