Mow the lawn while you sleep, with the Landroid Robotic Mower. This programable mower lets you customize its daily cutting schedule, and runs 7 days a week for a neat and trim lawn that's never overgrown. When the machine runs low on battery or senses rain, it retreats back to its base to hide out until it can continue its mission—giving you your best yard yet. Best of all, its super quiet motor lets you mow at night, which clears the yard by day for play and leisure. Available on Amazon; $999.