Basicly we cant get grids in sweden anywhere to build a C&C cage so we are considering a large bookcase cage. I was looking for any advice people have on things like how to attach a water bottle to the side of the cage without any metal grids to hook onto? How to increase airflow through the cage so it doesnt build up nasty smells are effect the piggies sence of smell? And any other tips people might have for solid (non metal grid mesh) cages?