Thanks for the responses, I've just returned from the local hardware store with everything needed to build two shelfs on the back wall of my workbench, to mount some tools on the wall too and little boxes to sort some things. I had already bought a small cabinet placed beside my workbench waiting to be filled with all the paper boxes with the presorted bigger objects like lcd-displays, sensors, shields for the arduino etc.
The system for the shelf is flexible, so I can easily rearrange both shelf-floors, because they have different widths and I have to try out the best arrangement.
If you all are interested, I'll keep you updated even with some photos.
Thanks for the hint with the SMD boxes, but I live in Germany and it would be hard to get those boxes for a reasonable price here I think. But in fact that I'm related to mice and rats, I'm really thinking about it, because of the "Mouse loo"
Building up vertically is an option, but height is limited, because I have only 1.9 meters from the ground to the ceiling in my basement. But if I will find the strength to sort some things out, I think there is enough room to store everything and still being able to work
Mario.