In case you don't know how to make your own humidification devices, here's how:
1. Buy some "florist Oasis" (it's the green spongy stuff that florists use for flower arrangements). Make sure you get "wet" oasis as opposed to "dry" (the "wet" oasis is made to absorb water [it's designed for fresh flowers] and the "dry" does not, as it is for silk/fake flowers.) You can find oasis very cheap at any craft store like A.C. Moore or any florist shop. (The most you'd pay for a brick-sized piece would be about $2.)
2. Buy some small tupperware containers or travel soap dishes from a Wal-Mart or K-Mart or wherever.
3. Buy some distilled water (very cheap) or some 50/50 mixture like Griffo (not so cheap.) If you want to make your own 50/50 in mass quantities, take equal parts propylene glycol (which you can order from a drugstore) and distilled water, and mix.
4. Drill many holes (vents) in the lid of the soap dish or tupperware container.
5. Cut a piece of oasis the size/shape of your container (they cut better when wet, but can also be done dry) and place the piece in the container.
6. Fill oasis with either the distilled water or the 50/50 solution, dump any runoff.
7. Place lid back on container and place your new humidification unit in your coolerdor, cabinet, humidor, tupperdor, or wherever you store your cigars.
A lot of steps are overexplained, but I figured it'd be best to overexplain than underexplain in this situation, just in case.
Hope that helped. :)