I need extra power klaws for my Nobz and what not, but I don't really know what would be acceptable to most people. I want each klaw to be unique so I don't just want to buy more klaws from the box sets. I think I will scratch build one based on a pretty easy tutorial I saw, but what else could I use? What about the Buzz saw arm from the nobz box set? Or maybe SM or IG power fists? What do you think?