I have an '06 Laguna Blue, I used the plate holder from Rick's:

http://www.ricks2k.com/products/plateholder.php

I spray painted (rustoleum) it matte black and then put a rubber washer between the plate holder and the bumper, to keep it from scratching the paint.

Sorry no pics, if you're interested in this solution I'd be happy to snap a couple and update the thread.

 

Back in my Fast and Furious days, I had a Japanese license plate which I simply attached two hinges to which I then mounted to the underside of the bumper. I then put some weight on it so it would only go up above 10 mph. Cost we about $3 from home depot, never broke

 

Interesting that the plate could create enough lift. Do you have any pics?

 

You don't mind snap some pic's, whats the benefit of the angle compared to factory?

 

Well, a plate is pretty light, I could probably blow it up with my breath

Just imagine a tag plate with two hinges on the top..

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Because of the angle it's got lower wind resistance than a flat plate, supposedly. I just bought it for how clean it looked compared to the factory one, and the fact that it doesn't need the bottom piece that attaches to the grill. These come from Rick's as chrome/silver, I used about 8-10 coats of flat black rustoleum to paint it.

 

I don't have any pics as I removed the plate until I have to put it back on.

I did not like the look of something mounted to the bumper, retract, sloped or not. The tow hook one is not too bad for something but it still ruins the lines, IMO. Plus at $60 plus shipping, its a bit steep.

I cut down (folded) the plate down to what is visible behind a plate frame (similar to the "Euro" plate post) and then added a little convex curve. With some bar aluminum stock, contact cement and screws I attached a box reinforcement on the back and bolted it to the black plastic molded piece with a hole in it that sits just off center on the middle horizontal piece in the 'grill'. Mine is an 09- I don't know if other years have the same hole and square molded piece on it like mine.

That way it is as small as possible but still legal (visible from the front) but behind the lines of the bumper; inside the "mouth". I have had no airflow issues at all.

 

I use brackets purchased in a hardware store and fixed under the bumper:

 

Does like factory when you look from the front - besides the angle?

 

No, it looks cleaner than factory because all you can see is the license plate. On the OEM plate holder you can see a black lip around the plate.