A battery tray I printed years ago.
Customized version of http://www.thingiverse.com/thing:1396924
Created with Customizer using the following options:
_spacing = 1.2
_diameter2 = 10.6
_diameter1 = 14.5
_groupspacing = 0
_rows2 = 1
_rows1 = 2
_height = 10
_base = 2
_columns2 = 4
_columns1 = 3
_cornerRounding = 14
_alignment = 0
The author marked this model as their own original creation.