Remove the switch and the boxes, then you get the typical homebrew power strip
Seriously, I've seen it in Austria... flush mount Schuko outlets screwed to a board using long wood screws, loose wires, no ground (as the genius took an old vacuum cleaner cord, much to the dismay of his wife who still wanted to use the old vac) and a regular staple as a "strain relief". Too bad digital cameras weren't available back then...