Battery, USB and SD Holder

I widened all the holes because original print was way to tight, I could not insert batteries at all and other stuff barely by widening the holes manually.

Original model had too many batteries for me so I cut that down to 6x AA batteries. And I added USB stick cap holders instead of SD card slots.

This model can hold:
- 6x AA batteries
- 8x AAA batteries
- 8x USB sticks
- 4x USB stick caps
- 4x SD Cards
- 4x Micro SD cards