Do you have no 3D gear but still want a taste? You can convert to Red/Cyan anaglyph using video players like VLC Media Player .
When downloading or finding Avatar in SBS 3D, look for tags like: avatar sbs 3d
If you still own a (manufactured between 2010–2016) or a 3D-capable projector (BenQ, Epson, Optoma), you are in business. Do you have no 3D gear but still want a taste