Hi Jennifer, welcome to my world lol.
I think that one of mine, Houdini´s mission in life is to find any weak points in my rabbit proofing and I can tell you, he has found a few.
I have any cables at floor level in plastic tubing which he can plays and nip at but can´t get through.
I tried with the walls but haven´t found anything that keeps Bandy from chewing one point so I just have to keep my ears open as you can hear him behind the sofa and just tell him off. It is working as he does it less and less now. Same with the little rugs I have in their enclosure. Some of them, they like to destroy bit by bit, don´t really mind about that as I usually buy them from the charity shop so they´re dirt cheap. I do tell them off and they know they shouldn´t but still do.
On Friday, I finally bought a cordless phone which I now have moved to the bedroom. That was the major sore point for me, they´ve gone through five connector cables for the phone wherever I put them and they are quite inventive and they´ve also chewed through 4 phone charger cables (I now charge that in the bedroom as well) and their favourite piece of furniture now is my china cabinet which they have nibbled round the bottom. I have sprayed with vinegar and have put some toys on either side so they can´t chew it at the moment. However, they like to chew underneath it so I am looking for something at the moment to put under there so they can´t access it.
They sound like little rascals but, on the whole, they are now quite good little buns who spend hours free in the living room and have lots of toys and other things to keep them occupied. They have soft toys and cushions to play with on the sofa as they love digging and they have loads of cardboard and wood to chew on as well. When I first let them out, I always put a nice long apple twig on the floor so that they can go and chew whenever they want, they always share it. So, I think, the trick is to give them lots of other things to occupy their time so they won´t be tempted to chew the good stuff. Having said that, there´s nothing so tempting as forbidden fruit...be prepared for that, once in a while.
Sorry to ramble but hope you are successful and would to see them in there once it´s ready.