How to make indoor children's naughty castle more competitive There are a lot of fun things you can do to keep your indoor children entertained, but one of the most popular and competitive is making a naughty castle. This is a great activity to do as a family, or even as a group of friends, and it can be incredibly fun to make! However, there are a few things you can do to make your naughty castle more competitive and challenging for your children....