CMC's cutie marks?

Something that has always crossed my mind. The CMC’s cutie marks. If they ever get them what do you think they’d be?
 
Since Scootaloo is good with her scooter her cutie mark could relate to being a pro with her scooter.

I always thought Scootaloo’s CM should be a winged fireball. No idea why.
 
Sweetie Belle’s would be a heart-shaped musical note or three.
 
Apple Bloom is the toughest, since it ought to relate to both apples and fixing/repairing things. Maybe a nut with an apple in the center?

Scootaloo-A scooter wheel with a lighting bolt and wings.  
Apple Bloom-Maybe a wrench or other tool.  
Sweetie Belle-A microphone with musical notes.