Here's a quick video showing how to tie up your laptop (or other boxlike object) such that you can wear it like a messenger bag; it'd be cool to be the guy at the meeting who shows up at a meeting with a coil of rope around his shoulder so that you can go hands-free when it's over.
How to Make a Wearable Harness for a Box-like Object out of Rope
(Thanks, SumitSumit, via Submitterator)