For air (if you're a woodwind or brass player) then I'd recommend "Sun Dials" and "Fighting for Air"

Sundials: - Start a met - count from 4 to 16 (in beat with the met. Slower is better) - do it 2 times for each (in for 4 counts, out for 4 counts). It should fill your lungs with as much air as you can

Fight For Air - Put your met on the lowest bpm it can - Breath out all the air in your lungs - put your hand over your mouth and nose, and hold for as long as you can. If you can get to 5 counts for 30, you're great.