One time I had to open a plastic case(you know the ones) and I also couldn't find scissors, so I used a knife. I stabbed myself by accident instead.
I guess this applies: At the club I intern at, we have "gong show karaoke", basically it's karaoke with judges (members of local bands mostly), who reserve the right to gong you if you're doing too horribly. One night the big spoon normally used to hit the gong with went missing somehow, and I had to rummage through the kitchen to find some sort of substitute. We ended up using... a beer tap handle. I guess the normal "gong" set-up, which is a trash can lid hanging from a chain on the wall (normally used for bands to display t-shirts) that you hit with a spoon, is almost a moon logic puzzle solution in itself.
edited 20th Oct '10 7:36:43 PM by MikeK

The other day I had to open a pack of shaving razors but I couldn't find any scissors. I looked around to no avail. Finally I had the idea to use my keys to open the package.
I couldn't tell you why but this pleased me greatly.
"Everyone wants an answer, don't they?... I hate things with answers." — Grant Morrison