Can nothing be done using the little free 12v energy I have and the free wifi?
We need to know the wattage you have available, as has already been stated. Voltage is nothing more than a measure of electric potential, wattage is a measure of the amount of work electricity can do.
I'll go out on a limb and guess your wind generator produces a couple hundred watts or there abouts, probably enough for a couple light bulbs and small appliance or something. I bet you could run like a laptop with a few USB stick miners or something very low draw, but you need to know watts available first. I don't think you'll be running any S5s or anything like that.