We've got a gym that he isn't very interested in, a couple of rattles which he doesn't mind and only one toy he actually plays with, no idea how to describe it!
What do your 3 month olds play with?
--------
This thread is a little old now, but if you’ve landed here looking for the top baby toys, we’ve recently updated our best baby toys page with lots of great options for your baby's first year, as tried and tested by Mumsnet users. We hope you find it useful. 
MNHQ