2.

It's hard to go wrong at ThinkGeek, where there's a virtual for geeks of every variety.

One of my favorites is the Linux Cheat Shirt, which not only features assorted Linux commands, but it displays them *upside-down* for easy viewing by the wearer. Handy for job interviews and any other occasion where the Linux geek's knowledge might be put to the test, the shirt starts at $15.

3.

Linux fans are often an opinionated lot, so why not help the one in your life express their true feelings? Nothing will make friends at the office better than this gem that reads, "The box said ‘Requires Windows Vista or better.' So I installed LINUX." Priced at $4.