Ukelin

The Ukelin is one of the strangest instruments ever invented. The name suggests it's a cross between a ukulele and a violin, but it's closer to a zither and a violin. Although rather than being a 'cross' it's actually two instruments stuck together and you're supposed to play them both at the same time. Bowing with one hand and picking with the other.

The instrument was originally a door-to-door salesman scam and it was a very successful one. There are a huge number of these instruments around and you can often find many of them for sale on eBay at a price low enough to make it worth buying just for laughs.

One problem with the ukelin is the strings. If you can buy one with a full complement of strings, do that.