Easel brush holder.
Cut the top off a condiment/squeeze bottle. Drill two vertical holes one inch apart. Thread a zip tie through the holes. Drill a hole through the spring clamp and thread the zip tie through it and tighten it. Do the same for the other bottle and attach to the other side of the clamp.
The cost to make this is about $12, less than half the cost of the commercial brush holder sold on Amazon.
