Stand for the long (15" or 380mm) Hydroflask bottle brush. All 3d-printed objects soak up moisture like a sponge--bottom is concave to reduce the contact surface with a wet countertop.
Added "stripes" to the model as extra bodies, for multicolor printing on Prusa XL. Blue and grey accents on black would match colors of Hydroflask brush (if you want to be fussy).
I recommend printing the stand on its back, with full supports. Printed in three colors with supports, it's a 3h45m print on the Prusa XL.
I've included the Fusion CAD model so you can make edits.
The author marked this model as their own original creation.