There is a desire to assemble a panel of LEDs - flat and three-dimensional.
Faced with the difficulty of installing an electrical circuit. I soldered one contact with a bare wire, and the second with the necessary places, stripped insulated, to avoid short circuit. Very dreary and not reliable circuit protection with a large number of LEDs.
I tried to make a flat panel on a foil textolite. If the first contacts are conveniently soldered in the drill, then what to do with the second contacts, how to connect them?
Maybe there are well-known ways to connect many such elements, some kind of flexible terminal blocks for the legs of low-power LEDs?