De Soete Inval is located to the right of the Efteling Museum (as if you are looking at it straight on) and opposite a first aid station. They sell 85 types of sweets which you can pick and mix yourself, as well as gift sets including mugs, tins and lunch boxes. It is rather small, but perfectly formed, being decorated in an old-fashioned style. This place can get very busy, and watch out for wasps in the summer!
Click here for more sweet photos of the store by our friend Milena.