If you are looking for a safe and secure booster seat that you can attach to picnic table benches, I recommend the Safety First traveling seat. It has a tray for food, folds to a small size and has a handy strap for easy carrying. It can be used 5 different ways. I love this thing – it’s ideal for camping! We also take it with us if we are going to be visiting family so she has a place to eat comfortably and safely. We got it at Walmart.