For travel, I have what looks like a rabbit cage. It's a long narrow sturdy metal cage that easily fits in the back seat of the car with room to spare. I put one of those Rubbermaid plastic boxes in the back as a litter pan and clamp it down with the woodworking clamps that look like giant clothespins. I also use this cage as a post surgery or sick cage and use a Rubbermaid box with the front cut out for easy entry. I put towels and blankets on the floor. I use stainless steel coop cups for birds to hold food and water. I'll also put a water bottle over the water cup so if it drips, it drips into the cup. Two ferrets can be pretty comfortable in there for many hours. It can be cramped for a healthy ferret overnight but it works well in the car. I have a collapsible cage that I use for overnight stays. Sydney [Posted in FML 6514]