Here is a fast water powered generator that a guy made up. I Like the use of everyday junk that he built it with.
https://www.youtube.com/watch?v=bNltaZ4RE2o
And here is a wave generator(I need to see this drive unit)
https://www.youtube.com/watch?v=t2merTZ7QFs
This water pump is another great idea as the paddle wheel gives it maximum power
https://www.youtube.com/watch?v=KtDb4F9F22E
Another with some decent water pressure
https://www.youtube.com/watch?v=FG18tDWLxk0
I Like the use of everyday junk that he built it with.
Spendthrifts are greenies who just don't realize it yet. ;0)=
Neither use trash, *other are pretty expensive, but you may be able to find less expensive parts.
*"both" - No idea where my head is
Moving water - pump water with no electrical use
http://www.riferam.com/river/
http://www.riferam.com/river/riverspec.html
There may be some DIY specs out there.
Power generation - KISS version: Radiant energy generator/energy converter; Initial battery powers the charging of 4-12x (or more, I've never seen more than a 12x input result) the initial battery, charged batteries then charge others in turn or rotate into a power bank. You can find some massive examples on YouTube.
http://www.youtube.com/watch?v=lCqkuSxFzeo
http://peswiki.com/index.php/Directory:Bedini_SG:Self-Runner
http://rpmgt.org/JoinBediniList.htm
http://bedinimotors.blogspot.com/
Build your Own generator:
For those with parts kicking around like an old lawnmower that still runs and and old vehicle with a functioning alternator, check this out.
http://theepicenter.com/tow082099.html
Making an Eco Fridge
How about turning that Chest freezer you have into an eco-fridge? http://www.aselfsufficientlife.com/chest-freezer-to-fridge-conversion-the-most-energy-efficient-fridge-ever.html
Seems they have a few ideas on how to save energy so maybe even cruise the site awhile as I did.