My fiance and I both work weekday 9-5 jobs and we keep our 8 month old in his crate for most of the day because we don't trust him to roam around the house yet while we are away. My mom who lives around the corner stops by around lunch time to spend time with him for at least an hour everyday. I have a nanny cam with 2 way audio always on his crate so we can monitor him at work.
He has plenty of space and toys to play with but he always decides to play/chew with something he's not supposed to like his bed or the crate tray. We actually had to take his bed out during the day which I feel really bad doing, but he immediately goes after it as soon as we leave the house. We've gone through so many and all different kinds too. We originally had the crate attached to a play pen so he could at least roam around in a bigger space, but he destroyed our hardwood floor by grinding his teeth into it.
I just need advice on keeping him happy and satisfied with the toys he has and eventually getting him to the point of no crate while we are gone. I don't know how to train him since the problem exists when we are away. I'm assuming he's going after every other thing out of boredom. I'm also lost with what kind of toys I should be putting in his crate. I'm reading it's not good to leave him unattended with any kind of toy, yet that's the first thing that is suggested for this kind of problem. I've read a lot of horror stories about dogs choking.