Man... there are so many accessory grips for that gun I can't even begin to count. Go to a gun shop and try a few out to see what fits your mitt.
Lots of gun shops have a nice selection of used 36s with grips you may not even have heard of... try them too.
Don't forget the Barami Hip Grip... if you want a easy carry, easy concealment grip.
Cheers,
C