Here's another fun idea for a gift/craft idea kids can make. I shared this on my personal blog in 2011.
My son built Marble Mazes for some of our family friends who have children for Christmas, and of course he made one to keep for himself and his siblings! I found this craft in a magazine - I believe it was Disney's Family Fun magazine several years ago - along with an article describing how these were popular games for children in the late 1800s and early 1900s, long before the age of DSs and PSPs! Unfortunately, I can no longer find the magazine or the article. You can rearrange the rubber bands in countless ways to make various mazes to roll the marbles through, then challenge your friends or siblings to roll the marble all the way to the end without dropping it. Add more marbles for extra fun.