I found a wind-up bowling game somewhere, and I thought that the ball would make a great Bob-omb with some adjustments. It was fairly simple to do, and the end result is pretty impressive. It reminds me of the Bob-omb from the Super Mario Movie, except mine is cooler, because that movie really sucked. The only thing is that this jumps and does not walk. Check out the video to see what I mean:
This was just a fun little project, and I really didn't put a whole lot of time into it, but I think it came out cute. Let me know what you think.