Oh how I heart Halloween! I mean free candy and handmade costumes? What more could a girl ask for? Adult Women Homemade Halloween Costumes. We found the very best DIY Halloween costumes for women, from Audrey Hepburn to Rosie the Riveter to Disney characters. These homemade Halloween costumes are cheap, fun, creative, and made from items you already have at home. Halloween is filled with scary things — ghosts, ghouls, and pricey costumes are just a few! If you’re the savvy type who prefers treats to tricks!