Amazing Bike Lawn Mowers, article by Warren McLaren on Treehugger. Too funny. I believe that when I saw one of these in some old friends yard ( you know who you are), it was called, A Redneck Lawnmower.
Re-use plastic bottle tops to tightly seal food bags. Cut off wide-mouth plastic bottle top just at crest. save the cap. slip over bag opening. top toward the open end. Fold bag over bottle mouth. cap with re-used bottle top. easy to seal and pour!