i have 30 or 40 things that require real-world fabrication. i guess i have limited myself until i get at least one third of them "tried out"
a shame , really, what else is there once the cork is uncapped?
Ok. Perhaps that is what you are looking for. There is a tool I've learned at school (It was a bit far behind but there it was).
There it goes (smilies faces added to follow text better):
Joe want to put out some stuff for his products he will put on the market... But he have too much stuff in his papers and he have to decide on some circuits for going into production.

The best circuits he can get to fabricate are complex, too big, too (whatever). There is a lot of inconveniences there because it's far from easy to put in production, getting the parts is long, the casing is expensive because it's a standard. So he decide on some avenues.

What does he do.

The first step is to formulate your problem . You have to know what is your problem.

In your case (I think), YOUR PROBLEM IS:
you have to put 10 circuits or ideas of circuit into pre-production.

That is absolute number one stuff to do absolutely. But god damn you can't help youself, you are scared on what to do first.

Second, you have to separate what you have to put into pre-production into what is what you
want and what would be a total
must circuit into your products to be sustainable or OK.
In your case you already told me you had 10 circuits that are super important to work on. You already made the work (well choose 10 or 5 or 3, whatever it is more realist and must do)
That is what I talked before about judging, deciding, putting the bar to a level where you can do it and will be judged as success. That is the criteria for a given
function. 10 CIRCUITS.
What you have there is a numbered criterion.

OKAY that is numbered: YOU have to number it absolutely. That is the abolute must, the 20 other circuits are a desire. You have 10 products in your front line for going out. You know the electronics OK, you know what musicians in what you are working would like, etc. You are not a beginner. To be by the book, you are OK.
20 other circuits that you have in your papers. That you like a lot, it is really getting you exited and other stuff that are good avenues, and the rest is... well... so-so.
Sit down, put your 20 circuits in front of you and brainstorm on why, what, when you think those circuits are cool, not so or probably or a really good idea. Expand what you know about them.
List everything down on paper.
You will probably have really long list of thing there...

It is the big work to do... Be patient.

You have to take each comments and compare them to each other in your list.
DO THAT WITH THE 20 CIRCUITS that are just the desired ones you left to play into. Relax, chill get to the bottom.
Example:
Circuit 1
Circuit 2
Circuit 3
Circuit 4
to 20Th circuit
1) case is expensive
2) circuit is tedious to solder
3) amazing sound
4) too much wires
...etc
down to the 20th.
OuKi. I put it basic but you can understand you can go more precise or more beefy.
Then put it in basic language:
- case price
- solder work load
- coolness of the sound
- wiring difficulty
etc...
When you compare an idea to the other give it a score 1 to 10. Or 1 to 5. Whatever scale you choose.
1) vs 2 ... case is less important than the work to do on soldering
1 vs 3 ... the sound of the effect is much more important than what the case cost
1 vs 4 ... I don't like wiring man, it's a total pain. bottom
2 vs 1 ...
2 vs 3
2 vs 4
For each round of fights give points (ex: 1

to 10

) to the best winner
Do that for everything. Put the point of each items together (+ or *) You'll already have a list of factors with an order of criteras that are top to bottom, super willing

to ''man give me a break''

.
Take these criterias and put your ten best ideas you had took as absolute must circuits to do, and judge the circuits you have there with the criterion that you found for the 20 willing circuits.
Now put your 10 MUST circuits to the test. JUDGE the the best you can with the DESIRES you had found for the 20 leftovers circuits, the ABSOLUTE MUST circuits. JUDGE THEM. Put the quotes.
You'll then have the 10 circuits to absolutely do to pre-production, prioritized with freekin' awesome desires you would like to do best.

----------------------------------------------
Of course you can chill, change stuff and thinker as you sort that. Take little notes that will just put some perspective into what you change and what the method had not sorted out conveniently to your taste or situation. Or what you think would not suit you necessarily.
That is a tool that is really useful when you are a bit lost with all the avenues that are presenting to yourself. It's a resume of a much more heavy method that big manufacturers or armies use.

(tedious pain)
Cool ? I tell you this is quite powerful Joe. Try it, it can't hurt.