Anything apart from the two mainstream default harmonicas (Solo-tuned fully-valved chromatic, and un-valved Richter 10-hole diatonic). Alternate tunings, different construction, new functionality, interesting old designs, wishful-thinking... whatever!
For the Irish souls among the users a little gimmick off-topic, i.e. not containing the use of any harmonica:
A small Pipeband of three lovely young ladies from all around the globe.
