Just think to yourself, "If I really could do magic, what would I do to prove to people I really was magic." then just figure out the method. For me the majority of ideas come when I am not trying to come up with ideas, they just hit me and I become addicted to them until I make them. My signature hints a trick I will be marketing soon either on t11 or at my own personal site it is EXTREMELY visual and stunning, never been done before. I am spending a few more months perfecting it though. I also have another which will be on my own site once it launches called "BREAK"