We have the luxury of my mom living near by and she comes over for dinner once a week then watches our girls for an hour and a half. Typically, my husband and I go to Barnes & Nobles, get a yummy coffee drink and browse at books. We also try to run one simple errand since it so much easier without the girls.
Way to go carving out date time when your children are in bed! How about good ol' board games? Boggle and scramble can easily be spiced up with wagers... we often wager who has to put away the last load of laundry or something like that (though we always end up doing it together) or the loser has to make hot tea for the winner. Or even "spicer" bets since you are married.... ;)
We aren't very creative these days... we just enjoy relaxing and talking to each other wihtout little voices interupting. =)
Blessed beyond measure wife, mommy, coffee addict, boo-boo kisser, toilet scrubber & lover of the life God has given me!