Has anyone else noticed that stainless steel tumblers are becoming the vessel we use to drink out of? I remember a few years back, Yeti became popular. Now you see them everywhere. Even at thrift stores. My company gives them out every year. I just saw that Ball has come out with an aluminium solo cup! Soon our landfills will be filled with these instead of keurig cups. But to tell you the truth, I feel like it is kind of a waste to have so many, especially ones that come my way "free".