Todd Langevin
WonderHowTo
Gadget Hacks
Next Reality
Null Byte
Gadget Hacks
Next Reality
Food Hacks
Null Byte
The Secret Yumiverse
Invisiverse
MacGyverisms
Mind Hacks
Mad Science
Lock Picking
Driverless
About Todd Langevin
Location: East Longmeadow, Massachusetts
Sites
Math Craft
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