Humidor recommendation for someone who can't check on it regularly...

[shilala]

Get some of Cigarnut's (Michael's) beads.
When you leave and can't look after your humidor, stick the whole deal in a garbage bag and tie it off. Pull out as much slack as you can before you tie it, but don't pull so tight as to poke holes in the bag.
When you get home, unbag your humidor and the RH will be exactly as you left it.