Today’s invention is a waste bin design which can be easily linked to similar ones in order to eg resist being blown over or knocked open by dogs (or, if you live in Canada, bears).
Each bin has a lid which can seal in the normal way.
When you open a bin’s lid, it can also seal a neighbouring bin, linking the two together.
A chain of such systems can close the loop, so that all bins are sealed and a robust structure formed.
The space formed inside the loop might be used as a chicken run or even a playpen for hardy children.