Homemade Wifi extender. Boost your wireless router at início for about $0.25. Check out www.freeantennas.com for the Ez-12 Parabolic Reflector Template.
Troy Hurtbise famous for inventing a bear-proof suit (as profiled in the documentary Project Grizzly) has adapted his suit for military combat. This is one crazy (but neat) combat exoskeleton.