While the energy lost from standby in some cases maybe minimal - the fact remains it's energy being consumed that in all honesty isn't required, and to borrow your metaphor -- if you save enough peanuts here and there you'll soon have enough for a bagfull.
Stand-by-awareness should be a focus as its the simplest and easiest form of energy management, and is usualy a great start in re-educating energy consumers. I agree with your approach entirely but i've found trying to get customer's to adopt this, is only (in general terms) possible if you are dealing with a customer who has experienced a large and unexpected bill, or a customer who you've managed to "educate". (I use this temr loosley and with regard only to EE-thinking).
So starting with the quick and simple and soemthing with an immediate and visiable result is a great start. You then progress through other measures, thicker winter curtains, double/triple/secondary.tertiary glazing, draught excluders, radiator reflectors, thermo-static controls, cavity wall and loft insulation, boiler and heating system maintenance, energy generation methods (solar, PV panels, CHP etc) all the way through to consumption monitoring and behavoural impact on consumption.
At the end of the day the very best way of saving money (not only in terms of energy consumption) is not to spend it in the first place. So any work towards this goal will provide a beneift albeit in (very) small individual chunks.