I have a homebrew basket setup, using a basket we already had and some stout zip ties. The rack is a cheap Nashbar LDT rack. I just gave my commuter bike a sponge bath today, so here are some fresh pics I was planning to post today:
I've been using this basket setup for a couple of weeks, and find it ideal for grocery trips, as well as piling in bags from work (teacher). The basket itself is very lightweight, and doesn't make any rattling sounds when loaded or empty. I already had the cargo net. I think it is branded Bontrager.
Eventually, I want to get some panniers, but it will be quite some time before I have that kind of money saved up.