Anything but clothes

Why do we celebrate Earth day? It only happens every April 22 and then passes without us even realizing it. Although the day sound trivial, I think we could have made it more entertaining and fun. I recall Earth Day 2009, I was on the bus and I saw a pretty dress made out of.... trash bags and candy wrappers? Even though I could not take a picture of it (unfortunately) it was beautifully designed