Introduction: Sahtan Cryptex
I've seen a few of these around on Instructables, so I thought I'd make my own. (Big thanks to merijnvw for the inspiration and instructions)
It's pretty much made of ABS and PVC pipe, keyed with short machine screws, capped with bits of pine, and topped with braided macrame cord.
At some point, I decided that English characters were kind of lame and trite, so I went with constructed alphabets by God-Emperor Evan Dahm of Rice Boy fame.