We had a really great evening today. It's Georgia's 5th birthday (already!) and we had a party for her and her friends at the local indoor entertainment place. I can't find a link to it on the web but it's one of those places where there are ball pits, slides and foam covered climbing frames.
In the evenings you can hire the whole place out and play a
laser quest type game amongst all the obstacles, the kids had a great time and when they got tired of carrying the heavy guns the Daddies took over and we had a right laugh!