Yes, I know it's really a chicken coop, but it also happens to be ideal for the ferrets, and I got this on eBay cheaper than I could buy the timber and wire to make my own at B&Q.
I went to B&Q anyway, to get the paving slabs for the floor. One of the main problems with the old run was that the ferrets kept digging their way out, and then catching them up again was quite a chore. Whatever else happens, they won't be digging out of this one!
The other trouble with the old set-up was that the hutch was simply falling to bits. The timber was rotting away, and it was only a matter of time before the floor fell in, or the roof blew off.
So now the 4 jills are settled in their new home, busily exploring all the corners and climbing the wire mesh all the way to the roof, just for a look, before sliding back down again.
I've added upgraded bolts and latches, as the originals were designed to keep chickens in, and weren't up to holding back ferrets.
After years of keeping ferrets, nothing surprises me when it comes to their ability to escape or get into mischief in the most unlikely ways. But so far, so good!