Good, cheap DS Lite screen protector?

[Cow_tipper]

I've been looking for a screen protector to get for a new DS Lite. I was going to get an invisible shield because that's what I have on my psp and I love it, but it's $15 plus shipping just for something that covers the screen. When I got my psp shield, there was a coupon code that I used to get a discount. Does anyone know of some sort of promotion code for an invisible shield, or a different kind of good DS Lite screen protector?

Thanks in advance for any suggestions.

 

[Azereki]

This is what I have, the Liquid Crystal Filter for DS Lite. It's a HORI product. You can order it for like $8.50, that is with shipping included.

 

[flojomojo]

I think the best screen protector is the clamshell lid -- anything else is going to look like crap and hurt your visibility. I suppose you could cut something designed for a PDA down to fit, but the DS screen is durable and well-protected, so what's the poing?