JW, thanks for approving me! Ideally, I would be able to generate an average of 5 kWh/day, but I'd be happy with a 500 Wh/day for a start.
Bruce, thanks for the questions. There are big trees around, but no antenna tower. My property is only a quarter of an acre, so I'm thinking something small - no tower, just something that sits on its own pole or on my roof. I don't know how to answer about wind speeds intelligently. The weather stations nearby register occasional winds in the 15-25 mph range, but consistent wind speeds are generally lower. It does seem like it's windy most of the time, but typically at lower speeds.
I'm not the classic DIY'er so, realistically, I was hoping to find some commercial products to experiment with, at least for the major components. Or is there just not a market for this type of thing so DIY is the best/only way to go? Are there relatively inexpensive, small windmills available for purchase?
In the meantime, I'll try those search terms and do some background reading. Thank you again!