This one of those projects that you do on a lark. I needed a tele-prompter, but really did not have a budget to purchase much less build one. This project cost me around ten dollars. If you have what you need around the house, it could be free. I meant this instructable for linux, but decided to make it more generic.
Note: I have no affiliation with Lowes.
Step 1: What you need:
2- cardboard storage boxes. (16 x 12 x 12)
1 - any computer with a bright monitor that can run a web browser.
1 - mirror that will fit in the storage box. (mine was from the Dollar store).
1 - glass or plastic pane that will fit in the storage box. (mine was from an old scanner).
1 - extra box to prop up teleprompter if necessary.
Stand or table that will be a viewing height. (We used a cheap ironing table from goodwill.)
Stand to adjust mirror angle (i.e .http://www.instructables.com/id/Ipad-et-al-holder/ )
Box cutter or knife.