If I get going on this topic I may not be able to stop - but...
I remember heating up a kitchen knife on a stove burner and using it to flare over the ends of axles, so wheels would turn.
I remember Revell "Whip Flying" aircraft kits. Each came with a hole in one wingtip and a plastic bag containing a blob of modeling clay, a metal ring, and a piece of string. The clay was to weight the nose; the ring snapped into the wingtip hole, and the modeler tied the string to the ring, took the model out in the back yard, and swung the airplane around his head. (The instructions recommended building the landing gear in the retracted position. If one ignored the instructions, the first landing was guaranteed to produce a similar effect.) My friends and I quickly figured out that Revell kits weren't the only ones that could be "whip-flown." My ultimate achievement in that realm was an Aurora B-29, which was on about 1/64 scale. Whip-flying that big B-29 turned into a fascinating exercise in elementary physics. We had an old-fashioned rain water cistern in the back yard; the lid was held down by a granite boulder that nobody could lift. On its maiden flight that B-29, with about half a pound of clay in its nose, demonstrated that the diameter of the string needed to be proportional to the size of the aircraft. When the string broke, and the B-29 made a beeline for the boulder, the results were pretty spectacular.
I remember when I was building a Renwall Patton tank, and the hobby shop was out of Testor's "Flesh," but "Aircraft Cream" dope looked like pretty much the same thing, so I painted the faces of the crew members with dope, and...eeeeeeeewwwwwww....
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.