Well bunnys are natural little adventurers. If they have access to an area, they are going to want to explore. If your at a giant mall in a foreign country and told to only stay in one store, wouldn’t you want to check out some other stores?

So, I cant think of what its called, but its what I use in my house to block off the computer area (well, it wraps around the area with the towers and all the mess of cords) and wraps around the bottom portion of our TV stand where we don’t really use anything (just stores all the cords). I guess its like chicken wire (DONT use chicken wire) but its plastic, and the holes are small enough that little buns cant get their heads through it. I found it at a hardware store.
There are also baby-gates you can get that either have really small holes, or Ive seen a few that are just one solid piece. You could also get shoe racks to put the shoes where buns cant get them.

If you do suddenly change a bunny’s area (from the usual livingroom area to the bedroom) they might not immediately go straight to their litter box. It is new to territory, and, to them, they may want it to be their territory(or they might just be upset that they lost their old territory!). My oldest did this in my fathers bedroom when she was moved as a baby after being used to the livingroom.

for chewing and scratching at clothes, they say bunnys do that, I think to try to clean? They want things to be their way, and their way only . There are some different sites about the best ways to deal with that. My buns never really tried to do that. For chew toys, I use toilet paper rolls, phone books, and cardboard boxes. I also give them a few “noise” toys that they like to throw around. Mine prefer keys (make sure not to leave anything sharp on) or I get little medicine bottles (cleaned!) and put some coins or other metal objects in it.