There is a lot of wall holder for Bosch 12V drill and screwdriver but I would like to have them standup on my workbench.

You have some idea to make it better, no problem f3d file is include.
With some parameters, a scale X Y ratio to adjust the play between the holder part and the battery. Another parameter to adjust play between holder and base.
If you want to export joined parts,  set play between parts to 0 (then better to combine, option:join to a new component).
Have fun