Burl and I have been making play dough for a while now. We've experimented with recipes, ingredients and natural additives and have had a delightful time in the process.
When I was at Urban Craft Uprising, I was happy to meet Kari of Mama K's Play Clay. I bought some of her clays and love them. And look how adorable she is! She was recently the featured seller on Etsy, a well-deserved honor. I highly recommend supporting her shop and purchasing her clays.
I also high recommend making your own. It's an easy and fun activity that engages sensory development. I follow a few recipes, but this one is a good starter. Burl and I made a few batches this year for Christmas gifts. I skip the food coloring and instead add dried botanicals for color, like beet powder, golden seal, alkanet and spirulina. I add essential oils for therapeutic affects.
Burl helped color the sticker labels :) and we put them all in 4-ounce size tins. Voila! A simple, earthy, healthy, non-toxic, non-synthetic gift.