Brooches are found in great numbers, both those derived from the primitive safety-pin ("Peschiera" type) and the "spectacle" or "Hallstatt" type found all down the Balkans and in Greece.
Hot glue a large safety pin or diaper pin to the back of a baby rattle.
Pin it in place with a large safety pin at your hip or under your arm.
The best way to do this is by hooking a safety pin at one end of the material and pulling that safety pin through the middle of the opening.
If one of your straps breaks or you have a tear you can quickly take care of the problem with a safety pin.