The Dollar Tree chain is now offering a brush cleaning pot for the price of $1.25 USD.
The lid screws off.
I've only seen the blue lids in stores, but they apparently come in four colors.
In real life, the lids open to the back. There is a very shallow well at the front of the lid. The bottom of the container has an indent that is perhaps suggesting where the water level should be.
The lid has ridges which allow you to set your brush on top without it rolling off, and a funnel-like opening to keep your brushes centered in the container.
Note that the label does not peel off, but will require water, soap, non-scratching scrubbers, and adhesive remover to get rid of (if you wish).
If anyone has tried one of these, I would love to hear what you think of it.