you could use a hard animal carrying case with hand warmers or a plastic storage bin with a heat lamp.i would use shelf liner or a towel in the bottom. just make sure that they are secured.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!