My SO liked this iWatch charging stand a lot, but she has watchbands that don't open, instead they are stretchy, so laying the watch on the charger presented a problem. I created this stand so that bands that wrap around like the one shown in the images here would sit naturally on the charger. I built it as a separate part so it could be added after the print of the charger stand itself.
Features include a (slightly, but not problematically, offset) hole to push the iWatch charger out through the already existing hole in the charger stand itself using a finger; a bay to allow routing of the USB connector without getting into tight corner issues; front legs to keep the weight of the iWatch from tilting the whole assembly forward; and filleted edges along the watchband path to reduce friction on both the band and the base.
It is designed so you can glue the two items, the charger stand and this base, together and not run into issues if you find you need to take the charger in and out for any reason.
I built it in Autodesk's Fusion 360. First I imported the stand mesh, then created a rectangular sketch exactly to match the base dimensions, which I extruded into a cubic object. From there, I just added features, using the imported mesh as a guide as to where. Then I deleted the mesh and exported the object to Cura using the 3D Print option in Fusion 360.