D.B.
His and her massages - you deserve something for all this effort!
Tickets to something you would both enjoy - theater, comedy night, concert.
A weekend away - get Grandma or Auntie to babysit, and find a nice inn or resort on Groupon or through Priceline/Hotwire. Many places offer great deals in the off season. You can do this quickly on the computer and look like you fussed for ages!!!