Impudent Mortal has some new paint racks available over in their webshop to help you keep all your colored goop in order.
From the release:
Impudent Mortal has developed 3 new paint racks that will hold your eyedropper paint bottles (i.e. Reaper, Vallejo, etc.) in the upside down position which will help reduce clogs and allow you to see what color your paints are easier. We offer 2 paint rack styles that sit on your desk and hold 44, or 66 bottles and a rack that will hang on your wall and hold 135 bottles.