Wash with degradable bio-soap
If you are on a primitive trip, you will most likely have to do the dishes and possibly a body wash out in nature. Bio soap is gentle in the heart, and it is possible to find them intended for body washing, hair washing, washing dishes and laundry, so you save space in the backpack. They can be bought where you buy your other outdoor gear, or you may be lucky that the health food store has it. Find lakes you can swim in on the Danish Nature Agency's website.
There is something about the food you have collected yourself. It just tastes a little better. In nature, in North Sealand, there are plenty of opportunities to order something you can eat, but also collect stones, cones and seashells. Here is ample opportunity to take things home for creative decorations. Stones with holes in them can be hung on a string, cones and moss can be added to the Christmas decorations, and seashells can be glued to the frame around the picture from a beautiful day at the beach.
If you want to freshen up your meal with berries, fruits, mushrooms, herbs, edible flowers and plants, North Sealand's nature offers a good pantry.
The best place to find mushrooms in North Sealand is Gribskov. The forest is especially mentioned as a good place, as the different biotopes and the large size mean that there are many places where the fungi can grow. Tisvilde Hegn and Store Dyrehave, as well as the various fences around Helsingør, are also rich in mushrooms. The coastal area is rich in sea buckthorn, and otherwise, you can keep an eye out for stinging nettles, mirabelles, red clover and other goodies from nature when you hike.
You may collect for your consumption equivalent to a carrier bag, but be careful not to confuse plant species and get the poisonous ones in the food.