So, with that confusing OP, to sum up - an object which you have no good reason for owning aside from to look good, eccentric, or just for the hell of it or whatever, nothing too over the top and keep it real.
![Smile :)](./images/smilies/icon_smile.gif)
The first ones that springs to mind for me are:
A Sombrero, so I can tip my hat at people in lectures and sit with it pulled down low so I can sleep with noone watching, and maybe do bad clint eastwood impressions.
A cape, just because it's a cape... and I could swirl it around me - yes, I could make one, but it would have to be a good one
![Smile :)](./images/smilies/icon_smile.gif)