Repair a loose screw with a toothpick. If a screw won't tighten all the way, wedge a toothpick in the slot to fill in the gap.Use a straw to blow dust out of small electronics. A straw is a great way to blow dust out of the nooks and crannies of your keyboard, phone, or other small electronics.Get rid of fruit flies with a bowl of apple cider vinegar.Pour some apple cider vinegar into a bowl and add a few drops of dish soap. The fruit flies will be attracted to the vinegar and will get trapped in the soapy water.