Heat is intensifying across Indian cities with each passing day. While sales of air conditioners are skyrocketing, people are also opting for simple gadgets that can keep them cool.  Whether it is enduring long commutes, working through power cuts, gaming without phones overheating or simply trying to sleep comfortably at night, many are now looking at cooling gadgets as everyday summer essentials. At the same time, brands are introducing products that combine portability with convenience, including wearable fans, cooling blankets and smart hydration devices.…