This is an improvement on my previous toothbrush holder design, which splits the part into a solid base/basin and a support cylinder that has drain holes built in. This addresses the primary issue with the previous model, which was that the monolithic design would collect dirty water around the base of the toothbrush.

The new model allows for water to drip off the toothbrush and into the separate base/basin. The chamfer on the base and the drainage grid combine to allow just enough space for the toothbrush to sit above any water that drips off the brush. Most times the water will simply evaporate if clean enough because there's room for air flow, but if any residue accumulates the two part design allows for both to be very easily separated and rinsed.