The thing about boredom is that it is definitely not about having nothing to do. I'm sure your house is full of games and toys and things to do.
Feeling bored is a sign that your child is running low on connection.
I'm sure you have tried making suggestions of things to do. These suggestions fall flat because your child has lost their sense of connection, they aren't able to think well and they aren't able to be curious and interested in the world around them.
So what can you do?