How about a swimming pool? You have your laptop on the side of the pool, and 30x10 or 25x15 (or whatever to make it 300 SqF) is not an abnormal size for a pool.
So laptop at pool edge while in water, wifi connection to printer, cordless telephone near by. Maybe you could even deduct the cost of the chlorine!
Only if I was planning on changing my citizenship and bolting. Btw, you know, I once thought about getting an RV or some huge SUV and trading out of it from my driveway -- my dog yaps like crazy. But when I did the research, anything with wheels would be problematic.