Cell phones may not be an obvious application for concrete, but they seem to have become popular nonetheless. In the July issue I told you about a concrete phone charger, and now we find a concrete iPhone case made to resemble the surface of the moon. The Luna iPhone5 case is made from flexible fiber-reinforced polymer concrete and each is custom-made so the crater pattern is always unique. It comes from Posh Projects in South Korea and would cost about $22 (converted from Korean Won) although it appears to be currently sold out. For more information, visit here.