You could also freeze the bananas first and then put some of that chocolate sauce that hardens quickly on ice cream (the stuff on dipped cones from places like DQ).

I've found some plastic travel mugs that have a clear outside part with a paper with a colourful design inside. I just take that paper out and make my own insert. You could scan a bunch of photos and make a collage or just put one photo.

The bingo hall downtown in my hometown blasts classical music to scare away the youngins who like to hang out in front of it. It is reasonably successful. They've relocated across the street to a park-like area.