I do not know too much about musical things, but I looked up some.  Most of these are antiques. There are some vintage violin strings, some antique ebony wood tailpieces one with MOP inlay some inlay missing ( pre-1930s). Some pegs, a bridge, reeds. The chin rest metal part seems to be incomplete or broke not sure.?  Guitar strings, a small pick, Spanish Castanets 2 sets. Various other pieces.