You know, they don't make strings of electrical Christmas tree lights like they used to.
When I was a little lad, a string typically had circa 25 sockets (or some number thereabouts); nowadays they come with just 7 sockets.
And plug 3 or 4 strings together, for 21 or 28 lights, and the whole thing shorts out.
When I was a little lad, it seemed to me that one could take the last connecting part of 4 or 5 strings of 25-socket lights, insert one of those multi-outlet things, and plug in the electric train, the electric bear, the electric heater, the electric power-saw, the electric blanket, and the kitchen refrigerator, and all would hum along nicely, no problems.
Of course, when franksolich was a little lad, electric Christmas tree lights were made in New Jersey, not in third-world countries.