If you want to see a show while you're in town, try and grab some tickets at Zenith de Toulouse in Toulouse Left Bank. If you enjoy the show and want to see another, Théâtre de la Cité, Casino Theater Barriere of Toulouse, and Halle aux Grains Theater are not far.
You can spend time browsing the exhibits at Ailes Anciennes Toulouse during your travels in Blagnac. Visit the shops in this relaxing area, or simply enjoy its coffeehouses.