A zip line is a great and fun addition to any treehouse. Shutterstock

A Fun Zip Line

While this add on may not be for every parent or every yard, it is an option to look into. While the zip line can be for everyone in the family, make sure to keep safety in mind when it comes to the younger children: they should always wear a helmet when taking a trip down the zip line. It is also a good idea to either provide a harness or a seat and handle for the children to latch onto or into for the duration of the ride. It might be a good idea to consult a zip line specialist before making any decisions on which materials to buy and how to construct the course.