Upholstery needles (lots of them!) (City east: Park-Monroe Ave)

Truly scary big needles! I bought them several years ago thinking they might do in a pinch for hat pins (for a play with Victorian costumes), but that didn't work out and I never got around to returning them to wherever-it-was I bought them. Can anyone possibly use these things? Or suggest an upholstery repair shop that might be interested? Thanks!