I just got this page from a friend, there are hundreds of circuits here, I think there are sure to be some interesting things!
http://www.talkingelectronics.com/projects/50%20-%20555%20Circuits/50%20-%20555%20Circuits.html
Maybe this can help one or the other.
Cheers
THOGRE
Yes a lot of cool things, I’ve used some schem of it with 555 for my bending toys 
huh… how to best integrate the stun gun circuit into my synth? 
I suppose with all the RF noise that would make it could be percussion.
For anyone wondering where Hackaday gets the phrase “You could have done that with a 555.” from.