Had a great weekend camping bushcraft style and foraging the autumn forest with my two sons aged 5 and 7.
Elderberry (Sambucus Nigra). You should never eat the green berries. And you should preferably cook them before eating since they may contain small amounts of cyanide. We did eat a few raw berries though and nothing happened. The rest of them we put in the dough when baking buns in the campfire for breakfast.