My 8 month old is super interested in doing what everyone else is doing.
So I grabbed a mason jar and some fuzzy balls and showed her how to put them in and take them out.
She immediately tried to do it, every other one went in her mouth, BUT I would just take them out and point to the jar and she would put them in, and then take them out!
It was fun for her to do something and she loved the feeling of the balls and the jar.
I had both items at home so this was free!