However, I did see a rather upbeat and jolly beggar a few weeks ago in Tin Hau just outside the MTR station on King's Road. He had picked a good location, since sizable crowds would gather while waiting to cross the busy intersection.
At first glance, the Tin Hau Harmonica Elbow Beggar (you'll understand the name soon) looked like a normal person who was just playing the harmonica out of his elbows (a way to get attention perhaps) but upon closer inspection, I realised that he didn't have any forearms -- just little stumps after the elbow joint.
While playing his tunes, he was also side-stepping to the music and grooving along, not to mention making eye contact with everyone who passed. It was pretty cool to see a beggar getting so into it, unlike the more dormant types like the Mong Kok Tree Trunk Stumps Beggar or the Wanchai Parma Ham Leg Beggar. Keep it up, dude!