Wet brush holder.
This is a wet brush holder. If you find your store-bought wet brush holder to be too small this is the solution. There's 3 different sized clips which can be glued into the holder. The whole assembly is then glued (with silicone) into a dollar store Betty Crocker food storage container. The clip holder and the small and medium clips can be printed face down with no supports. Only the large bent clip holder will need supports.