Camping Extension Cord and Outlet Minder

This was a recent solution I made to stabilize an AC power connection for outdoor use (camping). The measurements were specific to the extension cord and outlet splitter that I had on hand, but it shouldn't be hard to match this up with equivalently-shaped options from other manufacturers. The key requirement is that the outlet splitter used needs to have only one plug, and it needs to be the top one. My splitter also had a plastic guide pin that fit into the ground of the bottom receptacle and