To make this simple tool, you will need:

-A stiff piece of plastic
-Superglue
-Some kind of synthetic material for cleaning (for example, the soft part of a velcro strip)

Stick the piece of synthetic material to the plastic. It should be slightly narrower than the width of a USB port. Any lumps of glue that build up when you’re making the cleaning brush should be smoothed out so that it’s not uneven in any way. Once the glue has dried, carefully clean all the USB ports.