The test models were made by Reimar and Walter Horten but the V2 (production model) was Gothaer Waggonfabrik(sp?) design (i.e the 'Go-229').
Because of the war, getting the materials to produce something metal was virtually impossible. The Heinkel's He 162 Volksjäger ('people's fighter') was a classic example of a relativly simple aircraft, that could be made from basic materials (ie. things that were not of strategic importance) and produced by unskilled labour. Heck, it was actually intended to be flown by Hitler Youth after short training. (Imagine that? Air to air conbat with glorified scouts!)
Many of these weird and wonderful designs were scrap steel frames with a plywood outerskin. (This skin on the HoIX/Go-229 was actually two layers of plywood with a layer of sawdust and glue sandwhiched between it to absorb radar waves and to give a small mount of reflection).
If you're after more weird and wonderful German jets, google 'Alexander Lippisch' who was also big on the flying-wing thing (i.e. tailplane-less planes). One example is the P.13a, eseentally a flying tailplane which was designed to be run on coal (ie. ramjet powered) because of the rapidly diminishing resouces. After the War, Lippisch had alot to do with the American designer Convair, and the F-102 and F-106 fighters.
Another of my favourite German (failures) stories is the Heinkel 177 Grief (Griffin). This was designed as Germany's only heavy bomber, capable of flying faster than a Junkers 89 medium bomber, to carry more thank 1000kg of payload and to fly further thank 5000km. Further, it was to have the strength to dive bomb! Just for the record, on paper, this aircraft should technically outrun most fighters of the day and far exceeds the designations of any other bomber made to that date. Unfortunatly, it went downhill from there. Plagued by metal fatigue/stress issues because of its enourmouse weight, it came too late in the war to make much difference and killed more aircrews just taking off, than in actual combat. On of the biggest issues was engine overheating-related fires, due to the fact two engines were fitted per nacelle (essentially 12 cylinders to a manifold cooled by surface evapouration since radiators induced a dair amount of drag).
(A dive bomber! What were they thinking!?)