We like going to play put put golf.
Instead of going to the movies we rent a couple movies either from redbox or netflix and hang out on the couch.
Paint your own pottery.
comedy clubs are fun.
Ice skating in the winter.
Wine tasting.
Geocaching.
Here is a really neat website where you can get ideas for date nights under 30 bucks. Most of them are much cheaper than 30.00
http://thirtydollardatenight.com/