Here is a wall shelf built for the Dyson Supersonic hair dryer and the accessories. There are 4 - 60 x 5 mm and 1 - 50 x 5 mm steel rings built into the shelf to provide a magnetic base for the accessories. These are available on Amazon. The mount for the hair dryer itself has a TPU sleeve to prevent any rubbing damage to the hair dryer.
The shelf is 16 inches long and is made in two pieces that have a tongue and groove assembly and are glued together.
This one is printed in PLA+, but PETG would work just fine. Infill is 20% with a 0.4mm nozzle.
The author marked this model as their own original creation.