This is Lola and Bella’s new home. It’s a 4x2 NIC grid cage with 2 lofts (one L shaped with a ramp going up to a 1x2).  Its plywood with adhesive vinyl tiles on top. The whole thing is on wheels to (hopefully) make vacuuming behind it easier.

I want to add a grid barrier on the top loft so they can’t jump from there to the ground or vice versa (they would be forced to use the ramp).

I glued some foamy shelving liner ( http://www.walmart.com/ip/Duck-12-x-20-Select-Easy-Liner/16456560 ) to the ramp to give them traction but I’m afraid Lola is going to chew that to pieces as she is champion chewer. You should see what she has done to the baseboards in the apartment I’m renting.

Does anyone have any ideas for a material I could use to give them traction when going up the ramp that is bunny safe/chew proof? I’m going to keep an eye out for carpet (I would only need a tiny bit of it) that is bunny proof.

Now I wish I made mine like this lol. I wouldn't have room for 4 grids long anyway though. But really nice, I bet the buns love it I think if you add a grid barrier on the top like you said, it would also keep them from jumping off & possibly hurting themselves somehow.

As for the traction on the ramp, what I did for mine was cut some of the trim and put it across the ramp. Here's a pic: