A hoe. In high school I could weed a 6 foot by ten mile area in a day (all for minimum wage!). If you know how to use them, a good hoe can pull a weed out by the roots and drop it wherever you want. The trick is to hook the weed around the base of the rod by giving the hoe a half twist and then using the inverted hoe as a lever. It gets easy after your millionth weed!
I always thought that a good ho can make much more than minimum wage.
"It gets easy after your millionth weed!" LOL