Cat chew toy suggestions for a cat not reactive to catnip/silvervine?

My 2yo cat loves to chew on things that are really hard and somewhat pointing - crunching on legos that have already been built is a favorite along with the handle of her brush.

However, she’s not reactive to catnip so the wooden silvervine kickers weren’t more exciting to her other than being something to chase. Cardboard is her fancy but it breaks apart and makes a mess (much like legos).

Is there anything firm and mess free I could try that would satiate my chomper?