Stretching cat phone stand, designed to hold a large phone the gap is 14 mm. Printed with supports, but I think if you drop the model 1mm under the build plate it would be possible to print without.
I used a model from Cults3D ( Free STL file Stretching cat [free]・3D printing idea to download・Cults (cults3d.com) ).
The author remixed this model.