Lately I've been playing with Butterfly knife or ballisong. I would say that I am quite addicted to it now. I bought it when I was visiting Pulau Pinang at the famous longest roadside market. It is quite expensive for me to buy it though, but since I don't what else to buy, I bought it for about RM35.
As you know, this Butterfly knife is famous because you can perform tricks with it (like yo-yo tricks. p/s: It's not that you can perform yo-yo tricks with butterfly knife). I've been playing with my butterfly knife and doing some from hundreds tricks you can do with it.