Lefty Trouble

Alright guys, I am at a kind of a crossroads here, I have really gotten into music in the last while and play the piano, guitar, tin whistle, glockenspiel and harmonica all fairly well. But I want to play the violin and ukelele and other instruments like this. But the problem is, I am left handed, I went in and had a look at violins the other day but they obviously only had right handed ones and i was told I would have to play righty, bt it didnt feel comfortable at all!! Also, the ukelele and banjo? I was told you can't get left handed 5 string banjos! Any have similar problems, or know where they have a good range of lefty instruments? Any help is greatly appreciated, thanks!