DIY Darwin Award
All good Strobists go to heaven. Some, perhaps, sooner than others.
If you happen to have an unneeded engineer's lamp and maybe some extra life expectancy lying around, you may wish to consider this DIY slaved desk-lamp flash.
With it's sexy, open, all-metal design, you're sure to shock your friends and neighbors with your lighting prowess. Yessiree, this baby plugs right into the wall (230 volts AC) eliminating the need for those expensive, potentially life-sparing AA's.
Just perfect for that added depth-of-field you need when photographing small, inquisitive children as they run around your studio.
(Thanks to tarjei99 for the tip. And for the love of Pete, please do not build one of these things.)