first up, 2 new humidifiers. Now I know that most of us do not use the green florist foam type humidifiers, but I got these for my less sophisticated customers. They might also provide some value to you guys because these both have screw on tops. so these will be ideal for the do it yourselfer. you can remove the foam, and replace with beads, gel, kitty litter, silica, or whatever the hell else you can dream of. the humidifier in the bottom picture has an adjustable vent so that you adjust the humidity by opening an closing the vent.
The non adjustable is about a $9 retail, and the adjustable is about $15. I have seen the adjustable on Ebay for $25.