Playdough Recipe (Glow-In-The-Dark, Scented), Activities:

The glow-in-the-dark play dough can also be scented with food-grade, organic vanilla, chocolate, caramel and almond oil from Whole Foods Market.

http://m.instructables.com/id/Glow-in-the-Dark-Playdough/

Toddlers, preschoolers playdough activities ideas:

http://www.learning4kids.net/list-of-play-dough-activities/