In this tutorial, we learn how to make 3D glasses at home. First, take cardboard and cut two square holes in it. Then, take clear packing take and tape it over the holes. Once you've done this color the front of the tape with a red marker on one of the sides. On the other side, take a blue marker and color it in. That's all you need to do to watch 3D movies and television shows in the comfort of your own home. These are extremely inexpensive and can be made within just a couple of minutes. It's a great project for kids to do together!