So I'm moving back to my hometown in July, when my contract finishes, and will by staying with my mother for a while until I buy my own house (depending on if I get the job in the neighbouring city, which I have a good shot at but won't be certain for a while). Because she has dogs, the cats will have to live temporarily in the large converted loft plus a large outside cat pen. The loft has two bedrooms and a little corridor, so there's a fair bit of space but its not going to be as spacious as where they live now. To increase their space we've added shelves and 'tunnels' (a long sliding cupboard that runs the length of the main bedrooms). Does anyone have any other ideas to increase space for them? Its a temporary situation but I want them to be as happy as possible.