You don't have to have the skills of Martha Stewart to make your own costume. Get ideas from Pinterest or Etsy, or go to the online sites of Jo-Ann's and Michael's for ideas. Jo-Ann's has broadened its assortment to include more ready-made accessories like tutus. On Jo-Ann's online site, customers can find costumes that can be made in an hour or take three weeks and it separates the project by age and skill level.
Perhaps my favorite supporting player in the movies over the last few years is Tracy Letts.