Love FreeCAD! I redesigned my phone/tablet stand last night to print without support material. The nice big hole is there to make it possible to plug the device in, assuming the connector is small enough and central. A small challenge in this project and a change in my usual design thinking was the creation of something you can’t see - the object used to cut the hole.
STL and FreeCAD files on Youmagine.
https://www.youmagine.com/designs/phone-stand-v2