[shilala]

Glass top humidors are the devil. They leak like a sieve.
There's a "fix my glass top humidor" thread here somewhere. They can be fixed, it's a pain, but you can do it.
Were it me, I'd go with the tupperware Adam mentioned, then move to a cooler or winador when you get to that stage.
Get ahold of Michael (Cigarnut) and get some beads. It won't take much to keep up your tupperdor.