I like this idea. I've installed a huge amount of lights at home for years and enjoy it very much. I've never really installed for productivity purposes, that would be interesting. Safety is a big concern. GFCI outlet would be required.
I do have a question... I've always used indoor grade extension cords due to the fact that I can't find an outdoor grade 2-prong cord. What types of cords do you installers use?
I've not run into any safety issues, and open-ended plugs and plugs lying on the ground have always been sealed with electrical tape.
Any pointers would be appreciated.