Ideas within topic machines,others: (click suns to rate or comment on ideas)
| 1 |
| 3D printer that consumes supermarket plastic bags | |
| 2 |
| Use an internet homepage rotating tool like Whatpage. Link to several free click-to-donate websites, and each time you open up an internet browser a different click-to-donate website will appear. | |
| 3 |
| Use windmills for intermittent power in poor, remote areas, as farms in the US plains formerly used to pump water. Use for water pumping and purification, or making ice for underground ice house. (development,electricity) | |
| 4 |
| Apply a traser or glow-in-dark sticker to flash lights. When the power fails, you can spot and head for the flash light in the dark. | |
| 5 |
| How many times have you gone into the basement with your hands full, fumbling for the light switch? Rig power outlet or light with a passive infrared (pir) sensor to turn on the light when it detects a person nearby, for security or convenience. | |
| 6 |
| A digital camera which can be remotely activated by or attached to a passive infrared (pir) sensor for security. A similar example. | |
| 7 |
| So that blind or immobile people can respond to people at their door, a hand-held intercom (like a cell phone) linked to a fixed intercom at the door. | |
| 8 |
| A lawn mower that has a bottle that you can fill with fertilizer, pesticide, etc. While you mow the lawn, the fertilizer can be spread so that you can feed and mow at the same time! | |
| 9 |
| In the multi-purpose exercise machines, add thin rubber lining to the adjustable weight plates. That stops annoying noise when they fall suddenly because of lack of control/practice with this equipment. | |
| 10 |
| Computerised indoor swimming holes big enough for an adult and using elastic bands tied to ankles or waist to allow a person to swim. Saves space and costs. Computer to track duration and speed. Similar example | |
| 11 |
| To prevent medical problems from inhaling dangerous fumes (soldering, welding, melting plastic), a simple "fume-sucker" can be constructed using an old vacuum hose with a fan attached to one end. The hose can lead outside. | |
| 12 |
| In places where computers are left on for much of the day (internet cafes, libraries, offices), these computers could be working on distributed computing projects in the background. | |
| 13 |
| Liquid nitrogen airplane. Instead of kerosene, fill tanks with liquid nitrogen, which vaporizes through nozzles to propel plane. Safer since no fire danger; lighter since no jet engines; no air pollution; no noise pollution. Or use compressed air. | |
| 14 |
| Catch gray water (from washing dishes) and use for outdoor plants, vehicles. (I've seen plans for simple filtering through sand in an old barrel). | |
| 15 |
| To save space and energy, use a tankless water heater. (Example.) They last 30+ years and are safer. They are common in crowded places such as Hong Kong. | |
| 16 |
| Press the Mute button on your TV remote during advertisements to avoid being subliminally manipulated into buying the products/services on offer. Even though you don't want the product, the advert will have a small cumulative effect on you. (commercials) | |
| 17 |
| A cordless telephone with a backup battery in case your electricity goes out. Also have small mic and speaker built into base unit to permit calls to be received, even when power is cut to house. Add emergency numbers as one touch buttons. | |
| 18 |
| Save precious minutes in the shower by hooking up an extra valve to your shower head which can allow an external canister containing shampoo, conditioner, or body wash to be manually turned on or off. | |
| 19 |
| Make an electric trumpet that is powered, like an organ, by an air pump instead of blowing air through your lips. | |
| 20 |
| Silent vibrating watch alarms, so that if you are in a movie theater, church, etc. you can choose if it makes noise or simply vibrates like a cell phone, even lighting up to display time. | |
| 21 |
| To take pictures of myself, it would be nice to have a camera where you can see in front of the camera whether you have your face and other parts you want framed in the photograph. | |
| 22 |
| Measure the water pressure before and after the discharge valve in water pumping systems to analyse the energy conservation opportunity in water pumping systems. | |
| 23 |
| Don't hurry-scurry driving. Check how much time you save in one rush--maybe 1-2 minutes. It's worth not to save that time with a good chance of an accident of any kind. Just remember to set out early by that time of 1-2 minutes and save yourself. | |
| 24 |
| Wireless headphones (for CD/cassette players). | |
| 25 |
| Keep batteries in the refrigerator; they last longer. | |
| 26 |
| Build a sailplane powered by man. (airplane,bicycle,flying,hobby,glider) | |
| 27 |
| Use a stapler made with a staple remover attached. | |
| 28 |
| Make and place a round nail file--about one inch deep--under the metal part of a pencil. Held on by Velcro or tight enough to push up to its place, and stay there. To be used again and again. | |
| 29 |
| A pen that's also a flashlight. | |
| 30 |
| To reduce fumes that we breathe from mosquito repellant cake fumes and to kill instead of just repel mosquitoes, crumble and burn the cakes in a bowl in a closed room, then let the fumes out through screened windows before you stay in the room. | |
| 31 |
| Airplane with air pump inside and hole in back. Pressing a button pulls a stick that turns on the pump, inflating a balloon that exhausts through a hole to propel the plane. | |
| 32 |
| Save money by cancelling your home phone and just using your cell phone. (budget,telephone) | |
| 33 |
| After shaving, hang the brush with bristles facing down. The brush dries quicker and lasts longer. | |
| 34 |
| Supermarket shopping trollies can be joined together with lengths of rope to make a 'train', for use in the store. | |