learn a new instrument

My main instrument is the guitar. I also play a bit of bass, drums, keys, and can fumble around with a few other instruments. I’d like to get more proficient in those, but I also want to expand my repertoire. A list of instruments I’d like to become proficient in:

Harmonica
Accordian
Saxaphone
Trumpet
Recorder
Melodica
Banjo
Mandolin
Ukelele

I think I’ll start with the harmonica.