Finally you can buy these stereoscopic glasses. At the moment only in USA.
Hasbro Announces My3D, 3D Goggles For Your iPhone-iPod – News & Opinion – PCMag.com
The cost is low and most available apps are currently free (probably in an effort to generate interest), so even if you probably look insane when playing games with these on, at least they won’t empty your wallet.
Note the slots for the fingers, to reach the control areas.
I hope they will release the picture galleries available for the original ViewMaster. The 3D effect in those were staggering.