I was looking for a unique gift for someone whom I considered to already "have everything".
And low and behold, I came across lock picking! It's challenging and technical, but also fun and a great way to bond with others. Like puzzle clubs, lock sport clubs are a great way to spend a couple hours.
To get me started, I felt like I needed some resources to help me out before I went in totally green. Below I've listed a couple sites that I found intriguing:
1) the MIT Lock Pick Guide - check out this detailed look at lock picking by an MIT student back in the late 1980's. This must have been a senior project.
2) The Art of Lock Picking - here is a great resource for instruction on many types of locks.
3) Locksport - BBC look into the world of locksport.