I used to have fun as a kid growing monkey nuts into cute little plants that grew on the kitchen windowsill. Your nuts will also grow if planted into compost and kept damp in a warm, dry place, provided they weren't heat-treated at the factory. As an adult I have grown almonds from seed and the seedling trees produced nuts within a couple of years. I have no idea how long pistachio or cashew nuts take to grow and reproduce, but it would be fun trying. Good luck!