I think that before you impose your human expectations on them, you have to understand where they are coming from. And ultimately, it might benefit to have a paradigm shift.
For example, chewing is a behavior that is inherent to rabbits. No matter what you want them to or not to do, chewing behavior is something that is coded in them. Furthermore, chewing is a necessary thing for them to trim their teeth down. Therefore, you cannot expect a rabbit to not chew. To expect a rabbit not to chew is like going against their nature.
What you can control is what your rabbit chews. So you can provide safe, appropriate things for them to chew. You can block off areas or restrict areas so they don’t chew things that are unsafe and expensive, and lastly, you can prevent things like cords from chewing by actively taking measures to prevent them from being chewed (e.g., using hard plastic to coat wires).
For the litter box, you can try velcroing it down, I did that and i Know others have to and there has been no more issues.
The point is, if you are set on getting rid of your bunnies, then so be it. Find them a good home to go to. As JackRabbit said, no rabbit is happy being unwanted.
Otherwise, I think the challenge is to shift your way of looking at things. Don’t think of the bunny as the problem because then your solution is to just get rid of the problem. Rather, look at the bunny as doing natural, inherent bunny things which is not appropriate for co habitation with humans, and from there, how can you rearrange the environment to better suit your and the bunny’s living condition.
I hope that makes some sense