I've designed this model trying to reduce the mess on my desk.

It can store up to:
5 USB drives
3 SD cards
4 AA batteries
Some post it 50*20 mm
1 leatherman Multi tool
1 Smartphone
A bunch of keys
2 Allen keys
1 jack 3,5 mm dongle
And some other little objects

Hope this will be helpful
If you have any question or request just ask, I'll be happy to answer :)

A 360° video of the 3d printed model: 

Printing Settings:
Layer height: 0,2 mm (but I think you could go higher)
Infill: 10%
4 perimeters
5 top/bottom solid layers
No supports are necessary.
I printed the model in Sunlu's transparent PLA+

I also added two svg images that are not included in the files I uploaded. You can use the .step file and modify it youself.
Happy printing!