Make your own 3d glasses, or buy some really cheap ones

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Those classic red and blue 3D glasses are still useful! But where the heck can you find a pair in a pinch? Don’t worry, with an old CD case and a couple o’ sharpies, it’s ridiculously easy to make your own.

It’s dead simple: you need a clear CD case (or any sheet of clear plastic, really) and red and blue permanent markers. All you need to do is fill in a square of red and a square of blue on the CD case, and you’re off and living in the 3rd dimension.
If you’re lazy though we have these 3d glasses for 1.14$ free shipping.