Norad45,
I used a $30 daypack (Magellan Ranger) from "Academy Sports",the local sports/outdoors chain store here in Texas. The pack works well on day hikes and I suspect it'd be okay for warm weather overnighters. But it was pretty much filled up when I had both my regular sleeping bag and a fleece bag stuffed in it.
I'm glad you like my blog. Sometimes looking at it's pictures is the only thing keeping me sane at work.
-Blast