Grab the bell and grow those calves.
Stay tall and let the ankles do the work, no knee bend or bouncing.
Holding a kettlebell at your side while the balls of your feet perch on a step gives the calves the two things they respond to, external load and a heel drop into a deep stretch below the platform. The bell's grip-friendly handle makes it easy to hold through long sets, and carrying it in one hand adds a small anti-lean challenge for your trunk. It is the simplest way to progress calf work beyond bodyweight without touching a machine.
One in each hand is the most stable and lets you load heaviest. A single bell works too, hold it on the same side you feel is weaker or switch halfway, and use your free hand on a wall for balance.
The step is most of the value. Letting your heels sink below the platform stretches the calves under load, which flat ground cannot do, and that stretched position is where calf growth is largely earned.
Same movement, different loading. The machine loads through your shoulders and holds you in a fixed path, letting you go heavier, while the kettlebell version is free, portable, and adds a balance element. Use whichever your gym or garage offers.
