Put your feet in a bucket of water. Cooling your feet will help cool your body. When the water in the bucket becomes hot as it may after your feet have been heating it, put the bucket aside. Its temperature will drop in time. That same water can be used to wet a towel (as long as your feet don't stink - you're wiping your face with it!) or too keep your plants alive.
Relaxing foot bath 5 litres of water, 2 drops of lavender essential oil, 1/4 cup sea salt or Epsom salt Boil water and allow to cool down, add the lavender and salt soak your feet. Two more recipes like this for feet on this page too