This is a novel ‘Do it Yourself' hoe with interchangeable, plastic-friendly, adjustable, sharp & flexible blades. It's called the Recycle Strap Hoe and is amazing for hand weeding vegetables, strawberries, and other crops.  This hoe is great for weeding along plastic mulch without damaging it. It's inexpensive, light-weight & super easy to make from recycled materials and extremely efficient. The long handle make it very ergonomic. The blade is made of steel strapping and the light weight, flexible handle is made from Arundo donex grass (or bamboo, or wood dowel) and it's all held together with bicycle inner tube (or hose or ring clamps).  It was developed by Eric Brennan at the USDA (Agricultural Research Service), organic research program in Salinas.

CLICK LINKS BELOW FOR VIDEO TUTORIAL:

How to make an Inexpensive and Efficient hoe for weeding, DETAILED Tutorial: The Recycle Strap Hoe'

How to make an Inexpensive and Efficient hoe for weeding, BASIC Tutorial: The ‘Recycle Strap Hoe'