In addition to victor-eyd's post about cheap projectors and how to build one, I thought I would look in to it. I googled around and looked on craig's list. There were some around $20-$50 but decided to go to my local Goodwill. Wow, to my surprise was a 3M 9100 overhead projector with no lamp/bulb and no price. They said, how does $5.99 sound?! I said 'yeeaahh!' I ordered the high quality lamp ($30+ in some places) from Sam's club for $15.82 shipped (+tx). I have an old 15" lcd monitor so I am going to try and build one. I don't know much about these overhead projectors, will I need the normal video or a reverse one?
Hope this helps someone. Also, the freecycle.org thing is an option. Maybe someone in your area has a projector.
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