For just $44,000, you can buy a replica Roman ballista on eBay. It hurls a giant stone over 100 yards, and is 7.5 metres tall. Useful for sending heavy messages short distances, intimidating your neighbours and keeping Attila the Hun out of your garden. The giant catapult/crossbow was built for a Discovery Channel documentary. Here it is in action:
On an unrelated note, my birthday is coming up...you know, just sayin'.