Crazy Aaron's Mixed by Me Hide Inside! Thinking Putty Kit

Create custom putties with hidden surprises inside - five varieties of mixes and three tins of clear putty means the possibilities are endless. Create your mix, name it, draw a label for your tin, and play! Stretch it, bounce it, pop it, squish it, sculpt it and ... FIND IT! Made in the USA from non-toxic silicone, this putty will never crack or dry out.

From Crazy Aaron's Puttyworld, for ages 3 yrs-teen.