I recently setup the ultrasonic humidifier I have for my Ig in her enclosure. It was a hasty move out of necessity. In moving her to her new enclosure (new house and everything) I completely forgot that the humidity in my parent's house was controlled with a humidifier in the winter. After waking during the night and being completely dry, I began to worry about my Ig. I hadn;t setup the hygrometer yet so I didn't know the exact humidity like I did back home. Fortunately, with the mistings and baths and water in her cage it wasnt terribly dry like the rest of the house but it wasnt ideal.
So in my haste, lacking the supplies to plumb the humidifer from the outside, I drilled a hole in her shelf and used one of the ratchet tie-downs from an automotive store (happened to have two brand new ones laying around, ironically), and used that to strap the thing down so that she couldn't knock it over.
Its not ideal, and is being changed this weekend. I just have to build a shelf on the exterior of her enclosure to accomodate the humidifier. I already have the PVC for it. I will post pictures once I'm done.