just saw something on the twinkle site that had clamps on the lid. i have a tall skinny pedal bin...usually it is not full so boo can reach whats in there even if he does work out how to remove the lid!
consider a tall skinny pedal bin...mine is even pretty (pink...yes i know i have boys...but its MY bin!!) and afterwards it will be a normal bin! (tho David wont have it most places due to its pinkness)