for clothing, I've been wearing fishing shirts and cooling bucket hats (dip them in water and wear it). the long sleeve fishing shirts are dri-fit material so they arent hotter to wear than short sleeves but the long sleeves keep the sun off of your arms and are a lot more comfortable. you can also soak them and get the evaporative cooing effect for a while (because they dry so quickly) plus, they're easy to wash in the sink and dry out overnight.