I agree, get a Mistking.
In the mean time, you can put up a dripper or 2 just by sticking a pin hole
in the bottom of a plastic jug, and use a misting bottle to mist the cage a
few times a day.
I hand mist at the mo and i was just thing for when i need to go away for a few days as i can put a few cups in for bugs with some leafy greens so they will last and be enough food and can put the lights on a timer but the water is whats worrying me.
I know water falls are a no because they can harbor bacteria but wouldn't it be ok to put a small one in just for the days whilst im away and put stones in the bottom so theres no rick of the chameleon falling in and drowning, i live away from all family at the moment and dont have any frends who could come and see to him