Amazon has a large outdoor sun shade for under $20 today
COLOURTREE 12 ft. x 12 ft. 190 GSM Grey Square Sun Shade Sail Screen Canopy, Outdoor Patio and Pergola Cover TAPS12-9 - The Home Depot
PureFit Rectangle Sun Shade Sails Outdoor 12 x 16 ft - Sun Protection Sunshades UV Block Shade Canopy, Patio Shades for Backyard, Deck and Lawn, Blue : Amazon.ca: Patio, Lawn & Garden