You don’t need all of the tools (Foam Rollers - large and travel size, Rebounder, Body Sphere, Aligned Dome and Infinity Roll) to join the Studio… but I do recommend you have a roller.
Most of the workouts and sequences involve the use of the roller but there are plenty of sequences that don’t use the tools too, so that you have something to do if you are traveling or if you don’t have access to the tools.
To get the most out of the Studio having as many of the tools as you can is best. Start with the full size roller and then the Aligned Kit. These are totally affordable.
The rebounder will be your biggest investment - but remember it is an investment in your health and well being, and that is possibly the best investment you can make! But if it is out of reach, don’t worry.
A brisk walk or another activity you like such as spinning or a circuit is also great for getting some cardio.