Tacos and Thinking Putty = life. Take a Taco Thinking Putty is loaded with tiny tacos so any day can be Taco Tuesday.\nThinking 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.Thinking Puttyis 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.