I didn't collect photos of the real experiments, those were mostly "grab a scrap bike, hack it about, (try to) ride it, bin it and try again. But if you wander the mozbike site there's a few of those. https://moz.geek.nz/mozbike/see/misc/2001/index.html has the "MBB FWD recumbent" that's just a cheap chair welded to a BMX frame :)