If you hate having to swing by the store to get washing detergent and dryer sheets, Whirlpool has you covered. The appliance maker's Smart Top Load Washer and Dryer can now use the Amazon Dash Replenishment Service to automatically re-order supplies. Once you've synced your Amazon account, you don't have to lift a finger -- the machines will estimate when you're running low and ship accordingly. This is just one part of a smarter design (they already talk to your smartphone and Nest thermostat), but it could make the biggest difference.