agree with trikkiwi -- first 2 photos battery plate bit --most likely
second set agree with crusader ---yep lead washers are roof leak stoppers went on the shaft of roofing nails to act as a seal --
now me --- the bullets photo ---the bullets are modern type --- oh moe guess what --in your junk last monrh you gave me a old beat up shotgun shell head --it was marked UMC No12 CLUB * (united mettallic cartridge )--- 1888 to 1911 age range*
bottom photo first 2 look like jigheads minus their hooks and tie eye (rusted away? maybe) -- right hand end one is a spent mashed bullet --see the end ? its the circle part (base of bullet)