I absolutely loved this post, kajero, especially the image I had of you riding with that fabric on your back. This totally sounds like something we would do. We buy huge amounts of groceries on our bikes, take our laundry to and from laundromats, and my DH even took two car batteries to Autozone to be recycled on the back of his Bike Friday!
LOVE these kinds of adventures. 
Thanks for sharing -- only wish you'd had a photo to share!
Oh, and I totally agree with you about Minnesota -- we spent 10 days in Jackson County and are now up in Melrose and doing tons of cycling. The storms have been bad, but in between, the cycling has been amazing. It's a very cycling friendly state!
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow