Sewing related, thimbles and pincushions...altho I don't have too many of either...am really just starting on those collections! :)
Non sewing? I'm a cast iron cookware junkie and have skillets and muffin pans that are 100 years old or older...I collect Santa figurines...and crystal! I have a small collection of Waterford Christmas ornaments, and crystal bowls, dishes and candle holders. That's a slow growing collection since Waterford tends to often be out of my price range!