A great way to stay sane on a long trip with kids. When you're ready to leave, you give each child a roll of quarters ($10). You explain that they may spend it on souvenirs or food that they want when you reach the destination. However, every time they ask, "How much further?" or "How much longer til we're there?" or whatever the annoying behavior is you're trying to suppress, they lose a quarter. It usually only takes losing 1 or 2 quarters until it's a quiet, sane drive.