Heat the cups.

      Do you hate it when you make hot coffee or another hot beverage and you get side tracked. When you go back to take a drink of the steamy substance you find that the drink is no longer as hot. You can grin and bear it or heat it back up in a microwave but that will waste time.
      Imagine having a mug that will constantly stay warm to heat the drink. A rechargeable battery underneath the cup while wires of nichrome go are inside the mug keeping it warm. Keeping it air tight to make it dish washable may be a problem but i'm sure there is an easy way to get around that. 
     Just so you know I am aware that a thermos does exist but eventually it goes cold and it looks ugly in my opinion. I would rather drink out of a mug than a thermos.

TheChannel