Had it in mind to do the spreadsheet ever since I saw this thread. Had started an outline of it a while ago, but never followed through- Till a few weeks ago when we had a big snowstorm and I was bored. Took a day and a half of going through the box between clearing the driveway. In addition to the receipt and papers, a few suppliers have pretty good online order history info that helped a lot. Also went through my build thread to jog the memory.