This is what I have for now. I could not find a Save As or a Export Icon, so I used something else and modified it.
I mainly use this when I am in Sketching mode, for now, but I expect I will be adding more functions to it once I get used to using it all the time.
On my tablet, the icons are very closely spaced and neat, not with these big gaps between them. The tablet sits just above my Spacemouse, with a 3X3 keyboard between the two.
I cannot afford a SpaceNavigator, so am making my own.