In 1904 Emmie Alice Thayer lamented that a lady had to hold a hand mirror while attending to her hair or addressing the fit of her garment. The answer, she decided, was to wear the mirror by attaching it to her ears. Kudos.

In the same vein, in 1950 John Kozloff invented a “mirror-attached spectacle frame” (below) to free one’s hands for applying cosmetics or shaving. If you’re nearsighted they can even be fitted with glasses. With a pair of these Narcissus wouldn’t have been tied to that boring pool …

See Self-Regard.

Here’s one way to prevent ants from ruining your picnic — surround the tablecloth with parallel strips of electrically conductive material and attach them to a DC battery. Now any bug that crosses the border will close the circuit and get “a sensation which will discourage further travel across the edge of the cloth.” (Humans will feel only “a slight tingling sensation.”)

This idea, patented by Richard Mahan in 1992, has a proud history — Thomas Edison tried essentially the same thing as a young man.

Here’s a simple way to deal with enemy submarines — hang giant electromagnets over the sides of your ship:

The magnets being projected outwardly from the ship’s sides, a submarine within the fields of the magnets is attracted and drawn thereto until the glass caps are struck by the submarine and broken. The contacts will now be against the submarine which will close the circuit through the submarine, lighting the lamp and ringing the signal bell, thus notifying the crew of the ship of the capture of the submarine. The submarine will also be electrified, shocking the crew thereof and killing or rendering them temporarily helpless.

Inventor Louis Schramm offered the scheme in 1914. I don’t know whether anyone tried it out. Let’s hope not.

George Meacham invented this convenient planting device in 1856. Strap a seed bag to your waist and a plunger to each boot and you can plant corn effortlessly while strolling in your fields.

And maybe afterward you can dispense popcorn at the campfire.

Speaking of ship strandings, Charles Dornfeld offered this novel solution in 1902. Each steamship would be fitted with a giant spring-loaded plunger; if the ship strikes a solid object, the plunger will cushion its stop and automatically reverse the engines, sending the ship backward out of danger.

“As soon as she is backed off the springs 10 and 16 restore the plunger 8 and head 15 to their normal positions ready for like service upon the next occasion.”

In 1859, Irish priest Edward James Cordner reflected that most strandings of sailing vessels occurred on a lee shore; that is, the wind was blowing inland from the vessel’s location. This gave him an inspired idea: If the ship carried a selection of kites, these could be attached one to another and payed out until they sailed steadily over the land, and the line might then support a sort of gondola that could ferry crew and cargo to safety.

When a sufficient power of elevation and traction has been attained, a light boat of basketwork or other material, capable of containing one or more persons, is attached to the suspending rope of the last kite, more rope is then veered away and the light boat with its cargo will eventually reach the land without any chance of its being submerged in the sea, no matter how great may be the elevation of the waves.

It’s not known whether Cordner’s idea was ever adopted, but he does seem to have tried it out: In his 1894 Progress in Flying Machines, Octave Chanute reports that “it was tested by transporting a number of persons purposely assembled on a rock off the Irish coast, one at a time, through the air to the main land, quite above the waves, and it was claimed that the invention of thus superposing kites so as to obtain great tractive power was applicable to various other purposes, such as towing vessels, etc.”

This “device for teaching swimming,” patented by James Emerson in 1896, teaches good technique mechanically. The teacher places the machine in a swimming pool or open water, the student climbs aboard, the teacher turns crank handle 13, and the machine guides the student through the motions of swimming, “these arm movements being so nearly like those performed by an actual swimmer that the beginner who has these movements mechanically imparted to her arms thereby shortly acquires the swimming arm stroke.” What could go wrong?

When electricity became widely available in the late 19th century, some American cities put it to its fullest use: They replaced the moon.

Fitted with powerful carbon arc lamps, “moonlight towers” could illuminate a city’s streets “brightly enough to read a watch from as far away as 1,500 feet.” At first they were greeted as symbols of progress: A visitor declared the citizens of Aurora, Ill., to be “in a state of delighted enthusiasm over the splendid practical results,” and one Detroit resident reported that “the foliage is weird and beautiful. All places within the scope of light are bathed in the faint but fairy-like illumination of the moon in its first quarter.”

But in time residents found that simple streetlights provided better illumination and eliminated the disorienting shadows cast by an artificial moon. Most of the old installations have been dismantled, but 17 of the original 31 towers in Austin, Texas, are still in use — the 165-foot landmarks have stood since 1895, and have been listed since 1976 on the National Register of Historic Places.