Our 60-year old Hermann, Anton, is in an outside enclosure most of the time from April through September, but when it cools off at night, we bring him indoors for overnighting (and to warm up in the mornings). Outside, Anton has a partially buried terra cotta pot on its side that he often sleeps in. We live in Southern Sweden. We’ll be away for a week in September, and would like to leave him in his outdoor enclosure, but need some sort of heated box for him to be able to go into in case it gets too cold (We can ask a neighbour to come check that he’s in it, or put him in it). We’re looking for something simple — this is just a solution for a week (and we’re not terribly handy!), so not thinking to spend a lot or build a lot. Suggestions? Something we can buy and hang a heater in with a timer? Thanks for ideas!