This is model for "Battery boxes" contest. This holder can be printed with no supports. You will need:
Printed parts-
You might need to sand down or reprint “Clip (storage)” and “Bar” parts so they fit and hold everything. You can also remix wall mount for example to hang it on pegboard. I printed my parts in PLA.
The guide on how to build this is on my Youtube-
The author hasn't provided the model origin yet.