Appropriated computer cooling system, string, water, found material
The mechanics involved with harnessing hydroelectric energy are fairly simple. It is the storage and distribution of the energy collected that is complex and changing in tandem with technological innovations.
This device begs the question, what for? A computer cooling system is appropriated to deduct the "computer" to a simple string and light.
In reality, hydro dams are some of the least elegant and most intrusive devices disrupting watersheds around the world.