Of course, you need to buy your computer from Apple to use macOS (pretty much), but at least the operating system is free.

I have the caddy pictured on the left, and it both hangs from the showerhead AND uses suction cups. The overhead attachment is adjustable, giving it a pretty firm grip, so the suction cups are not as much use.

I have the caddy pictured on the left, and it both hangs from the showerhead AND uses suction cups. The overhead…