I love fun keychains and these pom pom fur balls seem to be all the rage these days. My DIY version is made with tulle so they're the eco-friendly, much cheaper version and simple to make. Here is a video tutorial as well.
Using cardboard cut 2 circles and then another smaller one in the middle. You will then cut a slit in each to easily wrap the tulle around. Using a roll of tulle wrap around till it's a good thickness. Cut in between the cardboard and use the open slit for this. Open the cardboard and tie ribbon or any string into a tight knot. Remove the cardboard and use again. Add a chain by knotting the string a few times through one of the links. Then add a keychain loop through the top of the chain link using pliers.
Make these for your friends, with your friends, or the kiddos love them too. Size, color, and chain is up to you.