Once I was traveling with a bus on a hot summer day. After I had finished chewing a gum, I wanted to trash it, but no trash can was there so I wrapped it with a piece of paper and put inside my pocket. Later that day I felt something sticky in my pocket and stretchy - it was melted chewing gum destroyed my pants!
The idea came out as this great solution - instead of normal, useless bottle lid, why not to have this one? We will need this at some time.
