Back when I was getting interested in building an airplane again, I wanted to build a glider. The best list of designs can be found here. There is an unfortunate lack of available/proven designs. One of the designs that was available when I was looking, but is unfortunately not being sold now, is the Woodstock. A very cool design, which seems to be descended from the Duster BJ-1B (although nobody ever comes out and says this; they are certainly uncannily similar).

But alas, the designer died (in his bed...) a few years ago, and now no one is selling the plans. I should have bought a set when I had a chance...