These are some cool tricks i figured out and u can use any tuning!

Aeroplane:Put your toggle switch facing head of your guitar and use
a finger nail NOT A PLECTRUM(as it won't work) to scrape the thickest
string down past the pickups until you hit the metal.

R2D2:Scrape your finger up and down your thinest string between the 
pick-ups and tap it every now and again.

Harmonics:Very lightly place your finger on a fret and strum or pick.
NOTE: This only work on frets 5,7,12,19 and somehow the first coil
single pick-up! It's hard to get the one on 5 right u need to bar it 
more lightly than any other.

Feedback:Turn your amp up and take your guitar close to it. Beware
though as it can screech/howl and it f**king hurts your ears.

Horror violins:This is easy as smoking a spliff!!! HAHAHA! Just twang 
the top of your strings. All 6/7 of them.(Some people like KoRn have 
a 7 stringed guitar ya see).

Helicopter:Easy. Just lightly put your finger on then second thinest
string and pluck with your thum dead dead fast.

These are all i can think of for now so bye. Oh yeah, HI KAT!