Natural Weed Killer 1 gallon vinegar, 1/2 cup salt, dash of dish washing detergent (makes it stick to the weeds). Mix well, spray on weeds in the morning, rejoice in their death that evening. This works best on a sunny day.
This might save some disagreements in our house...... When hanging a picture, put toothpaste on the frame where the nail needs to be, press it against the wall and voila! Put the nail there! Genius! Definitely the quickest idea I've seen yet! :)