Now I know this may not be the safest toy, but some kids can handle these kinds of things. You may have to set some rules about where and what you can use it on... I made this whip for my son for Christmas this past year. He has played with it non-stop. It has held up incredibly well, too. It was so easy to make. It is always hard to find good home-made gifts for boys- and this is a really fun one!
You need a roll of duct tape- I used tan colored- and a wooden dowel- I used one that was 3/8".
Cut the tape into 3- 10 ft. long strips. Attach the ends onto the back of a chair and and stretch the tape to the back of another chair that is 10 ft. away.
Fold each piece of tape in half except for the ends- leave them attached to the chairs. Start braiding one end while they are all still taped to the chairs, this keep sit from getting to tangled. If you have another person to help out, you can have them untangle it for you. It takes a while to get ia ll braided.
When you get to the end, take a small piece of tape and wrap it around the end to secure it. Remove the other end from the chair and attach them to the wooden dowel.
Idea found here.