Grinch rock has two routes with one star each that are worth doing (The Grinch's Grin 5.10d * and a 5.9*) and a 5.9+ route that should get one star. The rock is good brown varnish.
Getting There
Go to the Atom Smashers and The Grinch Rock is just south and facing you. The routes are in the shade all day.