What is the cheapest piece of equipment that has given you the biggest bang for your buck (the cheaper the better)?

We asked six leading members of various organizations this question, this is what they said:

Soham Desai Head of Strength & Conditioning, India National Cricket Team

The stopwatch has been the most valuable low-tech tool I’ve used throughout my coaching journey. In a world full of high-end tracking systems and smart devices, it may sound too basic. But for anyone working in running or field-based sports, the stopwatch is timeless. During my time with the Indian Cricket Team, I’ve used it for everything from monitoring sprint efforts and work-to-rest ratios, to tracking intent, fatigu...