SFGate

Deborah Butler, Brickwood Builders A slate floor in darker tones might look nice.

Tile Unlimited Marazzi has the most realistic wood look tile I have seen. It's called American Hertiage

StoneMar Natural Stone Company LLC I like wood-look tiles, or a dark grey porcelain with some texture.

Capua Custom Tile & Stone Here's a porcelain plank floor I just wrapped up using Bedrosians' Prestige series tiles in "Oak". They were less than $4 per foot and I was able to set them with a narrow 1/16" joint with little difficulty.
Hope that helps?
Shaughnn
Note: Because urethane grouts are semi-transluscent, they always seem to "glow" when I photograph them using a flash. The actual grout was nearly indistinguishable from the tiles. I'm experimenting with different flash settings, but for the time being I'll just include a disclaimer when the grout seems too conspicuous.

barbpell Do you think this would work in a 5 x 5 powder room? I love the pic. Beautiful job on the floor.

Capua Custom Tile & Stone Yes, I do think these 6"x24" tiles would work well in a 5'x5' floor. These plank are a good length and width to reveal the pattern without being too busy. You could look around for a 4"x24" tile instead though? That's a matter of personal taste.
Best of luck!,
Shaughnn

builper.com In a small area: just put 8" X random border and fill it up with mosaics.

kevinbrown i think here you can find some good tiles