Essentialmagic.com used to have a nice feature that would generate a page of color proxies.
Yes, thanks to "eM" I was able to get multiple friends into Magic, because using these proxies they could play without the need of purchasing cards. Unfortunately, the site took down that feature over a year ago.
You may be best off just buying 60 basic land from a store for a couple dollars, and writing on each of them with a Sharpie, because using all of your ink and paper to print out a ton of cards may be more difficult.