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Situation: Appartment in a panel building. Very hard concrete walls -- all, thick or thin. No plastic hooks (like these on alibaba that usually work for people around do not work for me, the little nails band when hammered in, and so does the larger nail.
So far, I have been hammer-drilling everything, even a hook/nail/screw for the clock, drilling 5mm hole and using wall plugs.
However, this is very inconvenient (dusty, I have to borrow the hammer drill from my family every time and it's not a cheap thing, I get big holes in the wall if I remove any picture or alike).
Is there any other option? I thought that maybe a small hole could be created at an angle and then a small nail inserted. If the hole had 2mm in diameter and the nail had 2.2mm in diameter, it could work. However, I have no idea how to create such a small hole. Or something like that... Any suggestions are welcome.