Mats shared his Potentiometer & Slide switch breakout -POTONG6 in the project log forum:
This is just a small utility board that I added to a previous batch of PCBs. Nothing fancy at all. :-)
Sometimes I need a pot or two when I test a design on a solderless breadboard and it’s always a PITA to fit the pots into the breadboard, same thing with switches. So I made the POTONG6 that is a SOB DP8049-sized breakout board with six small (10x10mm) potentiometers and six small slide switches for easy connection to a breadboard.