No idea if this has been shown here before but I couldn't find it.
Liked this so much I bought two of them:

Not designed for holding paint brushes but, as you can see, it works a treat. Oh, and those silver colored brushes are meant for painting finger nails but they are great for detail work; another modeler made me aware of them.
Found in the fabric crafts area of Michael's store in USA. Here is what they are 'designed' for:

And, for those who might want to track them down, here is the SKU, slightly out of focus but should be readable:

Not sure I'll get 28 paint brushes per rack but I'll certainly get at least 24 per rack which means I can have 48 brushes ready to hand. And, yes, those brushes in the photo are brand new and unused.
Not sure if the brush storage will improve painting speeds but it will help keep the painting desk a lot neater.
Hope some of you find this of value. Oh, I paid about $17 US for each - if you can find a typical Michael's 40% off coupon you could get cheaper for at least one (for those in USA at least). It pays to look around when the wife is shopping for her craft projects.