Sometimes you just have to downsize, and that time has come for my worm bin. Hard to believe, but I've been raising worms in a bin that I made from plastic storage containers since 2006! The plans I used to build my original bin are here, and the posts I've done over the years are here. Since relocating to an apartment I am shorter on space, so I've decided to switch to a store-bought worm bin that's more of a "tower" in configuration. They run about $100 online, but after shopping around I got mine plus extra trays/levels for less than that (mostly on Ebay.)
Here's the setup, it even came with a brick of coir and this handy rake.
Then I add a sprinkling of a "fattening mix" of food that I created, based on suggestions from several worm forums. The mix I came up with is: 50% "flock raiser" pelleted chicken feed, 10% unbleached wheat flour, 10% powdered whole milk, 10% wheat germ, 10% crushed eggshells (rinsed and dried before crushing), and 10% corn meal. I would recommend drawing your own conclusions from some research, as I am not an expert or pro by any means.
"Freecycle", but I'm not sure how many more years are left in it. I may just take it back home and dismantle it there.
Let's see how the worms enjoy their new "digs" (pun intended :)