Playdough containing both milk and nuts

I came across a recipe, for a home made playdough that contains both milk and peanut butter. I have experimented with peanut butter playdough (over a decade ago) but have not heard of playdough made from powdered milk.

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I'm not sure how common this would be, but I found a number of recipes for playdough using powdered milk. This could be a problem for people with contact allergies.