So you have a spare rim laying around, maybe you have it from swapping rims or it's a taco'd rim you got from a LBS or your local co-op; doesn't matter you're going to make it into a beer bottle key.
Step 1: The Goods.
- Hack saw
- bike rim (pretty hard without it)
- some spare inner tube (or your covering of choice)
Step 2: Saw That Rim!
Use strong intentional strokes to divide the rim in to smaller pieces. the length will vary on the size of the hands holding it. WARNING: has potential to make chalkboardesque sounds so be wary.
Step 3: File Under: Awesome
Once the bike rim has acquiesced to your strength take a file to it's sharp edges, soften it up. No blood.
Step 4: That's a Wrap
Take that spare inner tube and wrap it around the rim. if you've ever wrapped bar tape it's similar. It helps to cut the bike tube at an angle on the end to make the wrap seem more seamless. Once to the desired length tuck it in on itself.
Step 5: Enjoy a Cold One.
Put that baby on a cap and bust it open, flick of the wrist. Sit back and enjoy; watch all your bike friends envy, then appease them with one of there own. Beer and friends forever together.