For instance, here’s a 3D clip from the popular Avatar movie that you’ll only enjoy if you have the right colored glasses.

Create 3-D Glasses at Home!

The basic 3D glasses are available for around 99 ¢ on eBay but if you want them right now, you can build your own using a spare CD jewel case and some permanent marker pens.
Just scribble the transparent side of the jewel case with red and blue marker pens* large enough to cover the width of your eyes. The blue (or cyan) color lens is for the right eye while the red color will cover the left eye.
3D Glasses
Alternatively, you may use an existing pair of sun-glasses and replace the lenses with colored sheets of transparent plastic. So pick an old pair of eyeglasses and fill the left lense with red and right lense with blue permanent mark.
I tried using water colors instead of permanent markers but that didn’t work. Same was the case with sketch pens so stick with permanent markers.
3D Glasses with CD Jewel Case
3D Glasses made from Sunglasses