Cheap Temp Screen for Camp?

I was thinking of bringing my PJ up to my GF's parent's camp, was thinking this weekend but I don't think the NH weather is going to cooperate. I've seen some of the pics in this forum and the screens look great, but they're more permanent. I was thinking more the lines of hanging a bed sheet over a clothes line between two trees type screen (or maybe on one of the walls of the screenhouse), where I could take it down easy enough. I know it's not going to look the best, but I know I'm not willing to pay to get the best. The PJ is an Optoma EP732 (4:3, 800x600, 1500 lumens), probably only a dozen or so people in a relatively small area.

So, is the bedsheet/clothes line the norm for cheap guys like me in similar situations? Or is there another relatively cheap & easy way to get a better a result? And I'm guessing my 4w PC speakers aren't going to cut it (even though I can blast them in the house and they sound fine (although not nearly as good as my floorstanding set hooked up to my AV receiver), I'm guessing they'll sound worse outside with more background noise). So any ideas for a low cost pair of speakers too.

Thanks,
Brian

Yeah, didn't even think of that. Although 'we' just bought a set of sheets for it...they're printed sheets. Think they were cheap though, maybe I'll pick up a light grey set...for the contrast.

My only thing is the wind though. Camp/trailer site is kind of wide open, I was thinking of on top of picnic table against screen tent if I were to just do a sheet. But I think that would be too high for the inflatable...more air able to get to it, unless I can tie it down somehow but I don't think there are any holes or anything on my mattress to help secure it.

Yeah, we actually had good enough weather a couple weekends ago...although we did get a threat of rain. We had originally drapped a full-size off-white/cream sheet over the trailer, held up by bricks...but then PJ & equipment would be open to elements if it rained (which it did halfway through 2nd movie). So we decided to hang the sheet on neighbor's awning, anchored the bottom with rocks to prevent the wind from blowing it, and put PJ & equipment in their screen room. So when it did finally open up, all we had to worry about was moving the snacks to underneath the awning so they wouldn't get wet. Wasn't too bad of a setup, although it was cramped in the screen room...good thing at 1:15AM there wasn't many of us left.

If we didn't have the weather to deal with it would have been better as we were off to the side...next to the screen room. And the speakers could have been a bit closer. And the contrast on the 2nd movie (The Eye /w Jessica Alba) could have been a bit better, since a good portion of the movie is dark.

I think I mentioned before that we had just picked up an inflatable matress, but it's a double-height queen, with built-in pillows. So we'd have to put the fitted sheet on the bottom...and where it's so big, it's a pain to put in the tent...let alone in the wee hours of the morning after watching a few movies and a few cocktails.

Other than maybe a grey bedsheet and fine-tuning the PJ settings...any ideas to help with the contrast?