a holder I made for myself. It is designed for a typical gravity feed double action style airbrush you can get a bootleg version of anywhere on the internet. The angle should be just right for the cup to stand upright to make pouring paint in easier.

The stand will balance with the brush by itself, but if you want to keep the hose attached, there is just enough clearance room between the brush and the flat surface the holder is standing on for it, however I would suggest clamping the brush holder onto the table.