Designed in freecad and made a rabbit hide with a room that I can put a ice pack or hot water bottle in and away from the rabbit so he can't chew on it. It's flat pack.
@Acionna in the summer time where he used to live it got to about 29c some days which is not good for rabbits. So I was trying to find ways to keep him cool. Also we have a lot of foxes, so it wasn't always possible to open the doors on the cooler days. The frozen bottle of water helps to cool the rabbit.