I saw a show some time ago, with a mini air compressor that looped onto a a belt loop but Chris was using it on a fence project demonstration. Does anyone know who made it and where I can get one?

Lowes used to have that, not sure if they still do.

it's a little portable air tank, not a compressor. I'm sure it's still on the shelf, saw it again within the past year on a show. one of their Kobalt brand tools.