For Nikole Biscuit, Bear, Sugar and Popeye I bought several of the "accordian" tubes for my fuzzbutts and they LOVE them. I have them in my living room running around half of the perimeter of the room. Tubes run behind my couch, under my plant stands, and to the opposite corner under my desk. I use the elbow connectors and the round balls with the holes for connecting/entrances in between and on the end for more access to them. They play in them everyday. It is hilarious to see Merry run really fast through them and when she's real excited her tail twirls like a propeller!!!! It's so funny. Pippin loves to scooch on his back through them and hang out the ends upside down. They chase each other in and out barreling through and like it when I run my hand along the top and Pippin races me. I recently adopted a 1 year old kitty Bandit, and my sock monsters use the tubes to gain advantage over him. It is too cute the way they play together and Bandit sticks his head in the ball's entrance and meows for them. If you have other pets, the tubes are great to give the ferrets a secure way to get around the room and nice hiding spots. Although beware if they decide to hang out in the middle of a tube and you want to catch your fert - it can be difficult to get them out. I've had to take my whole contraption apart and shimmy Miss Merry out more than once. Overall they are great and help satisfy the ferrets natural instinct to tunnel. I have to get my website going so I can post the funny pictures I have of all the ferts romping with the kitty. The boys became fast friends and while Merry still has to come around I don't have to worry at all. She shows both those boys who's BOSS! It's funny because she's a little bitty thing and the kitty is afraid of her! She has her fun chasing him in the morning and pretty much ignores him after that unless he approaches her. So all's well that ends well in my zoo! Best wishes to all and prayers for speedy recovery to all the sick and lost fuzzies out there. Trish & her sensational six Dooks! Merry & Pippin Bandit the Krazy Kitty and cold blooded but hot tempered - Fredi, Grendel & Yoda [Posted in FML issue 3736]