Yeah Shawshank style - put a poster over a hole in the wall. Make a simple "door" style script for the poster that turns off collision so can go through it. Or get fancy and animate the poster moving to the side before turning off collision.
"Andy Dufraine crawled through a mile of s*** and came out clean on the other side"
"Get busy living or get busy dying."
Or go GoldenEye style, have a guard on a waypoint walk by, murder him with a knife hidden in your bed, then have him drop a key.
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"bond1 - You see this name, you think dirty."