We have mentioned this before, but with some nice examples on offer on eBay right now, the Ladderax modular shelving and storage systems are worth another look.
A real rarity on eBay right now that's certain to appeal to fans of 1960s space age design – this Superonda seating system by Archizoom Associati for Poltronova.
As you might have guessed, Archizoom Associati was a radical design group, operating out of Italy and designing this particular 'system' in 1966, produced at the time by Poltronova. Specifically the units are 'vinyl covered polyurethane blocks' that are cut into a large rectangle that's bisected by a wave'. The blocks can then be used as a chaise longue, sofa or divan.
Apparently in 'good condition', it's got some surface marks to the vinyl, but nothing more. Not cheap, with a current price of £449, but just you try finding another.