If you’ve decided to take up sewing or try making stained glass, don’t head to Blick or Joann or — God forbid — Hobby Lobby. The WasteShed, a nonprofit with locations in Humboldt Park and Evanston, sells (mostly) used art supplies at a discount. You never know what you’ll find. A vintage Singer sewing machine? Surprisingly fancy yarn? A notepad formatted specifically for storyboarding that TV show you’ve been meaning to pitch? Whatever you dig up will be cheap and good. You might feel like you’ve landed in Pee-wee Herman’s garage, crammed with colorful bits and bobs, but hobbyists love the thrill of the hunt. Pros, too; a friend’s fashion designer sister swings by for bargain fabric and cool buttons whenever she’s in town. 1754 N. Kimball Ave.; 1245 Hartrey Ave., Evanston. thewasteshed.com