Our house came with one of those black plastic composter dealies (the kind that really doesn't work). Even our housemate, with a degree in plant and soil science, couldn't get it to work. So she collected some stray pallets and chicken wire and enlisted our help to throw together a new and improved compost bin.
It didn't take long to screw the pallets together and add a chicken wire gate for the front.
Note old bin on left.
The new bin is much bigger than the old one (and much more functional). And with the new bin came the opportunity to rebuild the pile, carefully controlling layers of "green" and "brown". Now the pile is steaming hot.