If you want to make a right turn at a spot where your road makes a T with another road and there is a car in front of you trying to turn left, don't pull up even with it when trying to turn. Stay behind and to the right of the car so you can see the traffic in both directions. Of course, if you have a big car and can see over the other car, this won't help you, but it will help the dude who's in front of you, so it's still worth doing.
Always put your car keys, wallet, phone, etc in the same spot when you come home.
Before locking and closing your house or car door, feel your keys in your pocket. Do this every time and soon you won't have to think about it. Huge trouble saver.
If I have to make a long reply on the web, I usually do my composing in Notepad and paste it over. Not Wordpad- the text formatting can sometimes mess things up.
Microwave dirty inside? Nuke a wet sponge or rag to create steam. Let it soak the mess.
Keep some regular and some decaf coffee so you can adjust the caffeine level each time you make it.
Keep the local non-emergency police and all-night emergency vet clinic numbers stored in your cell phone.
Got a cold hamburger in your fridge? Nuke the patty alone first, then put it back together and heat the whole thing.
If your toilet is clogged and about to overflow, take off the tank lid, push the flapper down, and pull the float up. Careful, the lid is heavy and slippery. Plunge with care, too.
If you don't have a programmable thermostat, get in the habit of adjusting the temperature of your house when you go to work and to bed. The savings are worth it.
Buy a case of cheap bottled water, then take only one bottle per day, refilling it at the tap. You don't have to wash glasses, but you spend less and create less waste.
Dry skin? Sample size bottles (like shampoo) usually make good portable lotion bottles. Pick one that you can refill from the pump of your large bottle of lotion at home.
Get a plastic cage to wash your baseball caps in without getting them bent out of shape. They're like $3 at Wal-Mart in the laundry aisle.
If footing is treacherous, remember that falling forward is usually much better than falling backward. Be prepared to resist the urge to fall on your outstretched hand.
When walking with a knife, hold it point downward and fairly loose and low in your hand. Then if there's a bump the knife will fall a short distance instead of stabbing someone.
When running the bases, hold your batting gloves in your closed hands to reduce odds of finger injury from sliding or collisions.
If you must rinse your soft contact lens and you have no solution, you can use tap water. It will burn for a few minutes but will not harm anything. At least, not with any lenses I've heard of. In an emergency, you can even store your lenses in tap water for one night, or at least you could with lenses I used years ago. I won't promise there aren't some new funky lenses that are damaged by water. Use this info at your own risk.
Keep some cheap harsh nasty toilet paper around. You won't want to use it, so it's good to have as backup. This trick works with other things too, like soap.
Don't eat glass.
You can have more than one home page. Make one of them The Hunger Site, so you remember to click there and at its sister sites every day. Fast and easy way to help people.
Buy a multimeter and learn how to use it, especially for diagnosing car battery / alternator problems and for making sure the power is off to an outlet you're working on.
When discharging static, don't just slowly move your finger toward the metal until you get shocked. Tap it quickly and the shock won't hurt.
If you have a nasty injury like road rash, carefully shaving around it can reduce the risk of infection and greatly reduce the pain from changing the dressing.
When using a water fountain, use the knuckles of your closed hand to push the button (preferably your left hand).
To remove packing tape from a cardboard box, push the sidewall inward at the top so that you can slip your finger under the tape.