Sorta like Gnargnar's keychain, except mines got a guy on it, not a brick, and he loves to be mashed into random things that hang with your keys.
Step 1: Finding the right man for the job
This is a known fact throughout the world. If you own any lego set ever made, you have atleast one little guy that came with it. Find him, fill him in on the situation, then find out if he is prone to motion sickness. The guy I used is sorta firefighterish. Use whoever you like.
For this project it is recommended to have:
A lego man (duh)
drill (or use Gnargnar's method)
Step 2: Take him apart you must...
For this step, take the guy apart. That's right, pull his legs from his torso, and pop his head off like it's just asking for it. After you do this, put super glue on all the places where you took something off, and put them back on. this will keep random pieces from falling off during the most embarising moments. ex. Your showing off your new keychain, and the mans legs fall off. Now that would'nt exactly say craftmanship now would it.
Step 3: This won't hurt a bit...
Now that the lego man has been succesfully glued in place so that no appendiges fall off in public you need to make a space for the keychain to go. the perfect spot for this is on the torso, a bit under the neck, before you get to his "abs". Drill a hole there, or, do the hot fork through the plastic method used by GnarGnar. it does'nt have to be a giant hole, just big enough for the chain.
Step 4: You done yet?
ok, thread the chain through, put it on your keys, and go show it off to your friends, hope you liked my instructable. It is my first you know. Rate well, live long, and prosper.