Get out a bit and see the beauty of the area around Khao Lak.  The coastline to the north and south offers everything from miles-long deserted beaches - peaceful villages - beautiful countryside and more.  A couple interesting drives are the Cape Pakarang Drive and the drive around the Hot Springs Resort along NaTai Beach called the Hot Springs Loop.

Khao Lak is only about an hour north of Phuket - if you get an opportunity to visit the island - and still feel like exploring back roads, quiet beaches and stunning sea views - try Phuket's Best Island Drives