This is for those kids who love mess so work outside on newspaper or an old sheet! It is best done on a large piece of cardboard or wood but failing that use the thickest piece of paper you can find.
Look at the work of Anselm Kiefer; it is highly textured and he uses lots of found objects and materials.
Step 1 : Draw roughly a landscape where the horizon is quite high. Stubble or muddy tractor tracks in a field is great, or reeds by a river. The texture of the ground and land is what you are aiming to depict in your picture so you want to see as much of it as possible.
Step 2 : Mix up some household paint in a big pot with PVA or craft glue if you have it. Using straw, branches, sticks, dried leaves etc, make a collage to depict a landscape of fields and trees. Try to show some sort of perspective, (see the Techniques and Advice page) where things recede and disappear as they get nearer to the horizon, you might do it with the lines of stubble or tyre marks or just put less texture in the distance and more in the foreground so it looks clearer.
Step 3 : Wait until it dries, it might take a day or so. Add some colour with any paint you have, Kiefer's work isn't very colourful so just a touch of colour will do.
Other fun tips: Mix sand or mud into your paint/glue mix at the beginning to add texture to it. Try scratching into the picture when it is dry to add more texture before you paint it. Crumble and rub charcoal into the grooves at the end. Paint with watered down soil, after all this is how cavemen did it and is the basis of paint pigments!
Materials: Cardboard/wood, household paint, glue, foraged collage materials, any other paints and brushes.