After smoking some Inspiration..
I was thinking
,
Why not put a Bunch (no pun intended)of Banana Peels in a Gallon Jug,Attach a Heavy Duty Balloon to the Opening &Secure.
As the Ethylene gases rise they fill the balloon ~keep adding Peels until balloon is Full,
Remove balloon ~attach a valve & some tubing ~ Dispense Gases when & where needed!
TA-DA
Hey, this could be used with CO2 Too.....