writes: "I've just upgraded the case on my computer with a modified IBM P70/P75 Traveling Case with solid rubber wheels, a steel retractable luggage handle, and a combination lock. The project page includes a tools and materials list, a full set of instructions, and other ideas for making your own. These instructions could easily be adapted to making a case out of nearly anything similar. (The RF debate is addressed in the pages, for those who want to rant.) I'd like to see what other cool projects people are working on in this capacity. Computer cases can go far beyond the neat-but-overdone realm of clear cases."
This one looks ready for a beating, or to arouse the suspicions of airport security. Lucid directions let you join the fun, too.