Hi am a new user just registered.
My own local patch is St. mary's Island in Northumberland, it consists of a small wetland, surrounded by bushes and hedgerows, a rocky shoreline with plenty of tidal pools and of course the open sea. I hav also recently extended the patch to Holywell pond nearby, a large lake surrounded by fields and woodland.
Personally the pleasure from patch birding is not just finding a rarity but also not so unusual birds that you still dont see that often. Highlights from my patch so far are Temminck's Stint, Red-throated Diver, Red-necked Grebe, Blue-winged Teal (recorded by someone else), Red-backed Shrike (found by someone else), Redstart, Spotted and Pied Flycatchers and Marsh Harrier.