Adafruit Mini Solderless Breadboard - 4x4 Points [ADA2463]
Add a micro-slice standard solderless breadboard to your Perma-Proto or other perf-board. This 4x4 point solder-less breadboard is a good way to add some solderless prototyping space if you just need to have a couple points.
Comes with one 18mm x 13mm x 10mm piece of solder-less breadboard. There are four white posts on the bottom for PCB positioning, but you can cut them off with diagonal cutters if you dont want them.