We have an overflow of plastic shopping bags at the moment. This is probably because we don't generate as much household rubbish as we used to. Stephen's preferred method of storing them is to simply shove them under the sink but I'm much too organised to let them sit there like that. I like to fold them neatly so that they take up minimal room and keep them sitting in a container.
Lay your shopping bag completely flat and expel any air from it by running your hand over it.
Fold it in half lengthwise and continue to push the air out.
Fold it in half again so that you have a long and narrow piece like this.
Fold up the bottom end so that you have a triangular shape.
Fold again along the horizontal edge.
Continue folding until you get to the top, leaving the handles untouched.
Fold down the handles.
And tuck them neatly inside the little pocket that should have formed at the front.
You will end up with a neat little package.
Store them together in a container. I counted 18 shopping bags in there.