The pictures are very helpful,
I've showed my partner so when he adjusts the lid he can see what's worked for you!
I went to the pet store and got his wooden cylinder house that's got lots of grooves along it and three holes to get inside,
I didn't think she would be able to get inside but she did!
I've put it where she's been chewing and she went mad for it the minute she saw it,
She started by attempting to strip a lot of wood off it, and she was attacking it but not in an aggressive way, just in a 'I need to chew every possible surface I can get my mouth around' way.
So I think she likes it!