I do as well and I have said this before when this was talked about, branch doc, you should market this. I think you could make some $.
I think if you patent it first, you may never recoup the cost if the patent. How much would y'all pay for something like this?
And where would you get the tubing?
I've been told that before but I don't know where to begin to try to market it.
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If you go forward with it put it in a package with a name, a price and instructions, with a link to a descent demo video to boot. The retailers like it like that. It is not difficult to do. Wholesale for these kinds of things would normally be about 50%. So figure you and the retailer double your money.