The 18x24 inch shelves were perfect for the fridge. They didn't have poles that were the right height, so I went with the ones that were too tall. Thankfully one of my coworkers is from a family of plumbers and is bringing a pipe-cutter tomorrow so I don't have to hacksaw 'em to the right height. I'm going to buy one more basket and another set of cup hooks and the one-stop-coffee-worship-center will be complete.
I'm a bit worried about the coffee machines dripping stuff on the supplies below. I'll likely end up cutting a piece of paneling to fit the top shelf.