Spring-cage terminals will simplify your wiring and make your project more robust. Instead of soldering wires to your hole card, solder these terminals in 0.1" steps. There is a small spring contact so you can pull and slide your 20 to 26 AWG rigid or stranded wires in. Each terminal block is electrically isolated from the adjacent terminals. Each block also has two contact solder pins for high mechanical strength during soldering.

What we like about these terminals is that they are reconfigurable! The pack is delivered in a set of 5 pieces of 3-pin blocks. However, by carefully removing the end cap on each of them, you can snap them together and then replace the end cap. So you can use it to have 5 x 3-pin, or 1 x 15-pin, or 3 x 5-pin, etc. contacts. Keep them in your toolbox and store them if necessary!