Yeah, ikea lights have been working great for me as well

Yup, they tried to enforce that here in Denmark as well with the unlimited plans. Luckily, they lost the case to our Ombudsman and they were forced to allow hotspots

How are your upload/download speeds using those?

TLDR: An effective way to cool down is to cool your feet, the palms of your hands or the top of your face because of high blood flow through these areas. Some athletes are using cooling gloves to utilize this effect.