While on vacation this weekend, I found out about this quaint little spot in San Luis Obispo, California, where people have taken to sticking their gum on the wall. It is impressive how much gum can fit this narrow area, called Bubblegum Alley.
Above: People stick random notes onto the gum. Below: My brother in front of the gum wall.
To more info, here’s the Bubblegum Alley Wikipedia page.