Tea Bags
Not on clients, no, but when Hubby and I are both drinking our morning green tea together, I'll sometimes grab his bag and put one over each eye for a while. I find it soothing, even when it cools off. As a matter of fact, I *prefer* them cool; when they warm up because of my body heat, I'll turn them over to get the cool side on my eyes again! I don't know that I've noticed any "effects" of doing this other than the initial feeling of soothing cool moisture, but it's nice and he gets a kick out of watching me sit there with tea bags on my eyes!