Start with a short route and send a ball through it. Then use the extra tubes and connectors in the Air Toobz Bundle to add a longer stretch or an extra turn. Before you send the ball through again, guess whether it will reach the exit. Use the same fan setting for both runs and watch where the ball slows down or stops. If it gets stuck, change one part of the route and try again.

For a first set, this 100-piece Air Toobz Bundle brings the fan and extra building pieces together. If you already own the original Air Toobz set, think about what you want to add. A few extra pieces may be enough to extend your current routes, while the bundle gives you another fan for a separate build.

Build two paths from the included Switch and place a different coloured bowl at each exit. Choose a bowl, turn the dial to direct the airflow towards that path, then send a ball through and see where it lands.

Take turns calling out a colour and letting the other person choose which way to turn the dial. Once both paths work, change one route by adding a bend. Can you still get the ball to the matching bowl?

Share out the bundle's extra tubes so two builders can make a section each. One person might build a long straight stretch while the other makes a route with a turn. Bring the sections together and use the extra connectors to join them into one course.

Choose where the ball should land and send it through the full route. If it stops where the two sections meet, work together to adjust the join and try again. For the next round, swap sections and see what each builder changes.