Cushion inserts are behind the scenes decor saviors. Don't believe us? Here are a few situations where you'd need one. That cushion cover you fell in love with at that cool artist's fair didn't include a filler? Your favourite childhood pillow that's moved with you from your dorm room to your first apartment to your grown up home is feeling a little flat? This pillow insert will fill the need (pun intended). Enough said.