Being a student and an all around cheapskate, MYOG has allowed me to play around with UL gear whilst remaining housed and fed. Using 2nds fabric and household items, you can pretty much get away with ultracheap ultralight- but I get hung up on sleep systems.
Looking for a way to make a (roughly) 30 degree quilt on the cheap is frustrating- even with synthetic insulation and sale fabrics I'm looking at roughly 100 bones, which compared to other gear i've made seems pretty steep. Also, looking at the downsides of synthetics (longevity, weight, compression), a down quilt kit from thruhiker looks like a viable alternative at a moderate increase in price.
I don't generally like to ask people about the cost of their possessions, but I feel it is more appropriate in the MYOG community. Reduced cost is a definite advantage to gettin down with the stitchness.
So anyway, I'd like to hear about light weight, cost conscience, myog sleep system experiences. I'm currently using a horrendously anemic chopped up Lafuma bag/now quilt that won't survive another season, and would like to start on a new quilt as soon as I finish my atrocious neon green tarptent :)