Alea Tools Markers contest is one I'd used in the past and somewhat forgotten about.
Clear contact paper is a great, cheap alternative to using lamination film. I used to use this all the time, up until I was able to procure a huge roll of lamination film for cheap from a teacher's supply store.
The paper is slightly opaque, which doesn't matter too much when used as lamination, but the material also has a bit of super-fine texture which has a bit of "bite" when using certain markers.
Clear contact (actually Con-Tact is the brand name) has a bit of thickness to it which is also very useful. When working with paper miniatures printed at home I've found that a lot of times the minis aren't thick enough to get a good grip in the miniature bases, or at least the cheap plastic ones. With thicker cardstock I've been able to get by with just using clear packing tape, but a lot of home printers don't do so well with the thicker cardstock. If you can manage a thinner cardstock or even just regular paper, this clear contact paper, applied front & back, can give enough extra body to the mini to get it to fit.
I'll probably go into possible mini bases at a later date.....
While you are at it, you should check out some of the other contact papers available. Some of the other colorations lend themselves to interesting applications. Need a quick and cheap marble wall? use the marble colored contact paper on a wall made out of cardstock.