Rubbermaid box and heating pad?

Rubbermaid boxes are available at most any department store. They're lightweight, strong, easy to clean, and generally affordable. A standard heating pad can be set to low to provide a reasonable amount of heat, again without making a seriously high financial investment. The box can even be used to carry your snake in the car between the two places, if desired. Or, the Rubbermaid box can be stored away at the other location to await the next visit, where it can be quickly and easily set up for the reptilian "guest".