Store up to three wire brushes with this holder. I got some from Amazon. You can use them for other purposes but I'm using them to clean the nozzle tip of my P1S from time to time. You can stick this holder to the side of the printer with some double sided adhesive.

The small flaps keep the brushes dust-free. It also has a cool feeling to it.

The model is printed with tree support. Carefully remove this tree support by taking care to not damage the thin flap.

I've only tested with Bambu PLA Matte. It is very flexible. Normal PLA should be fine but PETG might be too stiff.