This is a very simple project. I always buy small cheap picture frames, and today I found some good ones at a flea market.
These can be used both for pictures and mirrors, and I needed some mirrrors for my Georgian house. I use tin foil for mirrors, and for a period house it's just as well that they are darkish.
My usual problem with heavy frames is that you cannot fix them with blue tack or sticky dots. But these frames had fixture for standing which I used to attach a piece of wire.
This is what it looks like in the interior: