Hanging shelves and other attachments to the interior walls

bwanshoom wrote:

Dtaylor wrote:
I put a shelf in our bathroom over the toilet as a decorative place for folded towels. When I drilled the holes, I used one of those things that goes over the drill bit to limit the depth it will go. (cant recall the name of the thing at the moment) You can add tape over the bit as well. Set the depth at about 1/4 inch. This way, if there are wires, you will not harm them. Then use wall anchors to attach your shelf.

It's called a drill stop. Here's an example. There are other styles, too.