Got her back to your place and want to see if she's in the mood? Have her sit on a stool, or hold a pillow, made from thermosensitive fabric that contains color-changing crystals.

Similar to the mood rings of the 70's, these accessories from Visual Reference Studio, respond to changes in body heat, leaving a temporary "print" of the hand or body in a contrasting color.

In addition to the stool and pillows, they also make a couple of lounges, and even wall panels, that can tell you when she's warmed up. All you need to remember is the bluer the imprint, the hotter her body. The rest is up to you.

via Modern Urban Living