Windermere Canoe and Kayak
On a nice day nothing beats taking out a kayak on Lake Windermere. You can hire a sit on top for 2 to paddle around the lake. Alternatively there is a branch hire place in Ambleside (Total adventure) where you can hire a canoe. there are also options for hiring rowing boats at Waterhead.
Everything else literally as they hire canoes and kayaks from their boat house. Also bire hire. Adjacent to the ferry with limited parking