Just everyone has a webcam these days. It is so common that the webcam vendors are offering twin packs to penetrate the saturated market. With two webcams, creating 3D stereo video becomes possible.
There are a lot of anaglyph stereo photo software. You will still need to take the separate pictures for each eye, and then process and combine them into one 3D picture. There are few anaglyph video software because videotaping two video streams at the same time is difficult and costly.
HeavyMath Cam 3D makes 3D easy. Instead of recording two videos, capturing each to individual files and process them, live video from two webcams are processed and merged into an anaglyph stereo video in real time. You can preview the 3D effect and make adjustments instead of depending on the guesswork.