What would you love to pay for if it was available?
plinkplonk: "The only rule should be that you would actually take out your credit card right now and pay for it if someone offered it."ok here goes,1. New replicas of old computers like the ZX Spectrum, Comodore 64, Amiga, the lisp machine, the Newton2. The above, but in a handheld form factor3. A kindle that reads programming books perfectly, has no drm and can handle pdf without conversion.4. A website that would pay me for learning (hey we are just thinking creatively!  A man can hope!). SO say if I finish all the non research problems of each chapter of Concrete Mathematics, I'd get 20 $)