When you live in random places on the planet there are things you can't get. This recipe is easy, fast, and things I always have on hand.
1+ cups of white flour
1/4 cup table salt
1/2 cup hot water
1/2 teaspoon cooking oil
Mix dry ingredients. Slowly pour in the combination of oil and water while mixing. Now you will need hands to mix. Add flour until the desired consistency (about half again as much flour).
If you want it to be colored you can add water based paint. If making the entire batch the same color you can put it in with the water/oil mixture. You can also go 'natural' which is fun, especially when using it to 'bake'.
If not used regularly the water will separate and just needs to be remixed.