New handmade hutch

So I decided it was time to get a hutch and I didn't want to spend money on one I decided to find some boards that were supposed to be used for our burnpit which is also known as a firepit well I used the good boards and made a new hutch and they seem to love it alot more than the box house and I was wondering is this pretty good for one that I made I didn't measure as u can kinda tell I did pretty good though from my perspective but I wanted to know other peoples opinion on it don't mind the bunnies though but potato was thinking I was taking a picture of him so he sat straight up

Take the collars off your rabbits ASAP!

Those also look like particle board which is not safe.

Can't quite make out what those colorful things are hanging from the cage side. Have they tried to chew on the particle board?

Wait... is that thing the bunny is sitting on the cage? Or is that the the inside of the cage? You can't show us your cage without proper pictures.

I got a rabbit harness for him now but the colorful things are a treat stick we got it at walmart which they already ate cause it basically just food and they still use the hutch but potato loves it the most cause it seems to be his hideout though i am not sure what type of boards they are