Can you make a sharp tool out of trash?  How do you expect to be CRAZY PREPARED if you can’t?

http://www.geocities.com/knappersanonymous/bottle.html

Downsides:

-May break.

-Easy to do wrong, tricky to do right.

-Easy to injure yourself.  (Don’t do this at a party after drinking.)

Upsides:

-Even your failures will be sharp.

-Use the debris of the fallen glass towers of man to arm yourself.

-Honor forgotten Gods with your adherence to the old ways.

-Fun trick for parties. (When sober.)