You know what skin franchise I really like, and wish that more were made of ?
Popstar skins : As in Popstar 
Ahri's Orb was cleverly used as a Disco Ball in her skin, an idea that could also apply to..
's Ball
's Balls
's Poison Clouds
's Seeds
and the list could go on.
I really liked the attitude of the Popstar skin and the Easter Egg to make Blue buff dance, but other Mages should join the dance party too!
Let me know what you think, and share other ideas! Thanks~