Ancient astrologers attributed gems to bring wellness and good fortune each month of the year. We celebrate today with jewelry, crystals, and even Thinking Putty. The stunning array of hues from the magical jewels in Birthstone Thinking Putty can bring focus and peace. hinking Putty helps build hand and finger strength through a fabulous tactile play experience with unique, unexpected properties and provides relaxing, yet stimulating interaction for anyone with sensory integration issues.Crazy Aaron’s putty is non-toxic, won’t dry out, and won’t leave a sticky or slippery residue on your fingers, so it’s great for stretching, molding, bouncing, tearing, popping and playing by kids and adults alike. For Ages 3 and up. WARNING: CHOKING HAZARD – Small Parts. Not for children under 3yrs.