Bionic Catmando

Skynet seems to be expanding into veterinarian services, judging by Oscar the cat's bionic legs here. Not only has the guy given a cat new legs after his old ones tried dancing with a combine harvester but he also got skin and bone to accept there new metallic neighbours. Oscar seems to be doing fine judging by the fact he didn't freak out by the fact he looks like the child of a house cat and K-9. Now think about what we can add there instead of legs like interchangeable parts on a GI Joe? Guns? Springs? Rockets?