Cut any aluminum can into a cylindrical throwie.
Step 1: Supplies
Can - some type of soda or drink can
Step 2: Measure, Mark and Cut
Measure the diameter of the top of the can. Mine was almost 3". Then measure down about that same distance from the top to the bottom of the can and mark it. I used 3" as my measurement. Extend this mark all around the can. You can start cutting the line with the knife, or just use the tin snips. Cut around the entire can.
Step 3: Remove Top
Now you have a little less than half a can. Use the knife and/or tin snips to remove the entire inside of the top of the can. The part you drink from. The picture explains it.
Step 4: File
The cut edges are sharp. File them smooth.
Step 5: Throw!
There are many ways to throw this. I find it easiest to throw it from the side, almost as if you were skipping a rock. Make sure it is not only thrown forward but also spinning.
Experiment with different lengths and throwing techniques.