I think I'd really like a scarification version of something very similar to this... Stained with some brownish, reddish ink?
Although not a tattoo, I just wanted to save this as it's an amazing idea and looks amazing...
Did you know if you draw on a lightbulb with a sharpie it'll decorate the walls with your designs.
Sketchbook - Doodle_04 by Henrique Abreu, via Behance
Henna Candle (Unity Candle ?) This ivory colored candle is adorned with an intricate henna mandala. The henna on the candle has been sealed to insure the henna does not flake off. #etsy
Henna Mandala design on canvas by CutthroatHennaArt on Etsy, $30.00
Mandala Mania | Flickr - Photo Sharing! Has the feel of Art Deco meets Moroccan/North African style henna. Paste still on design.
I love this one for the side of my thigh... the symmetry won't be thrown off by curves.
Gesha elephant, mandala design. Just the jewels