In old days, when was really low on funds (now just barely hanging on anymore). I took an old Maxwell house coffee can, the small size, drilled a hole in bottom of can, took a wire hanger, and bent it to a spring, slipped it in the hole, then reached in the front and opened it. Worked okay. then I made another, and drilled two holes in can 1" from bottom opposite each other, and can wire through there, much better, used tape to put it on bow. Not the greatest, but only thing I had and we ate.