DIY. Tracks for balls

Here is easy to do handmade track for balls made of cardboard. I used one cardboard box and one tube. I cut a tube across in two pieces, and each of them in two gutters. Then I cut one side of the box. And made round opening in the short face for balls. Now glue gutters inside the box so upper one is just under the round opening. Here you are! My kid loves it!