Those suction cups may work on glass or polished steel but there s no way i d try hanging my guitar using one of those on plaster or drywall as you lot call them.
Hang guitar on wall without nails.
If you have children at home you can increase the height on which you hang your guitar.
Mark the place and drill a hole.
It s generally accepted as a safe way to hang a guitar because the downward exertion from the weight of the guitar isn t nearly as strong as the pull of the strings in the opposite direction.
I am living in a dorm room and would like to hang two guitars on the wall an electric and an acoustic both to save space and for the artistic value.
The answer is no.
Find out the exact point where you want to hang the guitar.
Finally hanging on the wall as opposed to a floor stand might be your best option if you are short on space.