Found various patio seat cushions for $12.49, up to 75% off:
Salito Marine
https://m.lowes.com/pd/Garden-Tre…100051912
Sanibel Black
https://m.lowes.com/pd/Garden-Tre…100051905
Palm Leaf
https://m.lowes.com/pd/Garden-Tre…100051923
https://m.lowes.com/pl/Patio-furn…r+cushio