Close your sunglasses and flip them upside down for a handy-dandy phone stand. Rest the back of your phone against the bottom of the lenses, and the earpieces will grip the phone and hold it firmly in place. This works especially well in landscape mode. Happy scroll time!
Don't like the smell when the AC kicks on? Tape a dryer sheet over the vent for a fresh aroma. This works for window units and in-ceiling or in-floor registers. You don't need to block the vent entirely or your dryer sheet may end up across the room!
Tie a distinctive cloth or ribbon to your checked luggage when you travel. You'll recognize it instantly when it shows up on the luggage carrel. Luggage claimed!
When you're carrying in groceries, struggling with a latched door is impossible. Wrap a strong rubber band over the inside knob, flip it to form an X, and wrap it over the outside knob. Now you can go in and out freely and remove it when you are done!
You can freshen your garbage disposal with lemon or baking soda. Coffee grounds work well to abrade food residue from the blades. Just run it long enough to ensure what you've put inside goes all the way through. Fresher kitchen by the minute!