I'd like to submit my hex tarp project. A month ago I asked my wife to show me how to use our 1970's Singer, ordered the stuff sack kit from y'all and made some sacks, and then went for a tarp project.
I used Green Tea silpoly for the tarp and HyperD 300 for the reinforcements at all corners. The pullouts are 3/4" grosgrain with d-rings. I used the Fronkey tarp video as my basis (https://www.youtube.com/watch?v=0E7Ah2KDUoU). I did cat cut the edges (not the ridgeline) which I now understand is probably not needed for silpoly. It pitches very taut and stays that way, even after a shower. Sewing was straightforward with only a few do-overs, and now I'm looking forward to working on an underquilt.
If I had it to do over, I'd probably go for the tarp kit that is now offered since it's available in exactly the materials I wound up using.