Finally did Lucille Ball for a Halloween costume! (And It only cost me $2 for a curtain from St Vinnie's to make the apron out of. Everything else I already owned!)
I had to come up with something I could wear to ballet class on Halloween (and do ballet in) so I upcycled an old sweater dress and made green shorts and legwarmers (See my tutorial here.) and went as Poison Ivy. This costume was completely free!
Hair and makeup.