A black and white Japanese Zen-style icon consisting four chevron-style arrows, like the angle extensions of a k, and two dots. A blue icon that resembles the upward pointing bud of a rose flower. A black and red icon consisting of a fountain pen cutting through the neck of an ouroboros snake. An icon made from a simple stylized brain shape, with red as the left hemisphere and green as the right hemisphere, surrounded by concentric semi-circles of red and green on opposite sides.