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.
Alternative Gardening: Seed Spacing Template using Corks.
Automatic Irrigation Watering Spikes - Set of 8
Irrigation spikes - attach these spikes to old soft drink bottles to create an efficient irrigation system for your garden! The slow-drip design delivers water deep into the soil, so your plants stay nourished while you save time watering.