Obstruction Island just off the southeast part of Orcas Island is a good place for beginner-intermediate kayakers to paddle without being carried away by currents. Here's more about this satisfying island circumnavigation paddle.
You can only get to Blake Island in Washington State by boat (or seaplane, it turns out). It's a fun kayaking adventure from Seattle or Kitsap County. Here's more about kayaking and camping on Blake Island.