home is where you make it, bro. no shame in the game.
i lived in my shop for about two years while i built out/reno'd my house. rigged up a garden hose shower and cooked on propane/charcoal grill or white gas camping stove for a good part of it. i don't know if Dr. The Mrs. would go for that nowadays, but it was a high time back then.
oh, sorry i didn't answer the question. yeah, they make corner tools, but i always found working with them in tight spaces such as behind the doors to be cumbersome so i just use a sponge block with the face angles.