DIY Nerf darts — when the original set gets lost (and you know they will get lost!), you'll be happy to know that you can make your own Nerf darts! Now it is known how to get the holes in the Nerf darts for legs on Proto X SLT quadcopter.
thumb prints made into Christmas lights. Easy craft to do with the kids. To enhance this, I might extend the strand each year, so by the time they are older, you have a long string of thumb print lights.