Hack n' Build
A machete is created from a junk sawblade and a walnut log.
Build a DSLR microscope mount from PVC pipe and jeweler's loupes.
Build a simple and inexpensive torsion box workbench using dimensional lumber and plywood.
Saw Blade Survival Machete
DIY DSLR Microscope Mount
Easy Torsion Box Workbench Plans
Harbor Freight Fixturing Clamp