Update 3/21/2024 - I added detents to the top of the hanger arms to facilitate hanging the mask by the headgear reliably - I designed these to print support-free.
I use a CPAP at night, and I have no convenient place to lay down my mask and tube in the mornings, it always ends up getting in the way, or falling off my nightstand in to the floor. This is a simple hanger I designed for standard width CPAP hoses (approx. 18mm width). It allows me in the morning to quickly take off my mask and hang it up on the wall behind my nightstand. Mask/headgear compatibility should be universal, as the hanger is not dependent on a mask at all, but rather the end of the tube. It is slightly slanted towards the wall, to encourage retention of the hose, should it become jostled. There are also 2 variants in the single print profile, one with a screw hole, and one without (for adhesive strips).