With it being so cold and wet outside recently, it has been a case of rain stops play.
There's only so many hours you can while away in front of the TV, or convincing yourself that xbox kinect or wii fit actually counts as exercise.
Amazon had a special on Nerf items recently, so I got 2 guns and these refill darts.
They stick well to the woolly jumpers my mum knitted us for Xmas, so we use them as targets / scoreboards (while wearing) - extra 20 points if you get santa in the eye, etc.
The darts whistle as you fire them (though only really noticeable over distance, such as up the stairs.)
Good, safe indoor fun for us, the dog got shot accidentally, but he didn't really notice, they bounce off the TV and anything that a tennis ball would destroy. The refills are essential to make a 2 player game last that little bit longer.