DIY Gift : super extension cord

old extension cord to a super extension cord
better, safer, never throw one away
video on youtube by stud pack

12 gauge wire extension cord or one that you would throw away

double gang box - drawn box (pressed, slides easier, smooth) not a welded box (square sharp corners, you can see welds)
ground fault
duplex receptacle
mud ring cover plate

strain relief from mcmastercarr
use a drill index to figure out the hole the wire fits in
junction box