In a previous reno, drywall was installed over a wall made of a material I can't drill into.
I want to hang some shelves. There's about 1/2" space between the drywall and the previous wall material - not enough to get a toggle bolt in.
If I had a metal plate about 1/2 inch by two or three inches with a place to screw in a bolt in the middle, then I think I could cut a slot in the drywall, insert the plate, rotate 90 degrees, and replace the removed piece of drywall. This would have the same effect as a toggle bolt. I'd repeat for each place I'd normally put a toggle bolt.
However, I don't know where I'd find the parts to do this. Also, maybe there's also a better alternative. Any advice is appreciated.