Redefinition of use...

The commercially viable light bulb was invented around 1880 (depending on which line you follow) by Thomas Edison...

In 1949, Lew Urry invented the small alkaline battery...

Anthony Maglica took the design of the modern battery operated torch and honed it into his Mag-Lite...

2008, EwanTFP redefined this modern marvel of engineering into a teether.

Ewan got his first tooth this weekend and now it looks like he's attempting to prise it out.