Thanks for all the responses so far, keep them coming. 😃
[quote name='ahpook' timestamp='1476999775' post='3159237']
Well, the two instrumental bands I was in never really set out to make any money, so I can't offer much advice really.
I did see a superb surf instrumental band once who had a theremin in a pineapple ice caddy, which was a great stage prop, and acted as a focus for some on-stage fun, so maybe something to act as a focus might help.
[/quote]
We're not setting out to make any money either, it's just a fun side project with (probably) a high concept.
Funnily enough, we do have a theremin on hand!