Probably the last back scratcher you'll ever need...
You need 1 curtain rod, the flat, small kind, as seen in the picture!
Cut the rod to length with the smaller rod still in.
Flatten the rod slightly on the tip.
Insert into scratcher and tap it in.
It should hold without glue.
Leave the cap on the back on, put a string thru. Done! You can hang your personal back scratcher everywhere...