If you love modeling clays of any kind then you may want to consider making your own clay. If you are not already doing so, you may be surprised at how much money it can save you and how easy it really is. Take a look at this list of 7 different clay mugs and give one a try!
1- 3 Clay Recipes from The Artful Crafter. These are for a cold porcelain variety and make good, fine grained modeling clays. The article has great tips for colouring and working the materials as well.
2- Jewelry Clay from Homemade Clay Recipe. This is what I could call more of a salt dough recipe. It’ll have a moderate grain and needs to be finished with a sealer to keep humidity from damaging it over time. It is great for kids though, soft and easy to use.
3- Baking Soda Clay from Easy Network
4- How To Make Clay from how is another cornstarch dough type clay.
5- No Bake Polymer Clay from Suzy Homemaker. The pictures in the tutorial are a little misleading being mostly polymer clay (PVC based) clay items but the recipe is a decent cold porcelain clay recipe using glue as a binder and cornstarch as the filler. The result is a fine grain product which you can colour or paint.
6- DIY Air Dry Polymer Clay from Happiness Is Homemade
7- Non-Toxic Oven Clay from The Hippy Homemaker. This is a good one for kids and does, as advertised, make great kid keepsakes. Completely non-toxic, soft and simple to use. Again, I would use a waterproof sealer on it to keep the ingredients from swelling or taking on humidity.