are butterfly knives legal where you are? I'd have to look for some details, but I believe a few years back Texas changed some rules and made them legal to own and carry. The way I remember it, you'll still get in trouble if you have one and get caught committing a crime as it's a "deadly weapon", but it's ok to have as a general carry item for law abiding folk. I assume this is a law that varies state to state, but when I was younger it was bad to get caught with one of these bad boys.
I still have a scar on my thumb from trying to do cool shit with a balisong 30 years ago
. Unfortunately, I was never all that proficient at whipping that thing around.