>>10893453You can make a fine house without nails.
Haven't you people ever taken shop class?
Assuming you just have nothing but your hands and a favorable environment rope is fairly easy to make, you can shape stone tools with some elbow grease, use rope and wood to make more complex tools.
Fashion a small log cabin, shanty, lean to, a dugout, or shelter against a rock face. Use stone, clay, and sand to make a fireplace.
You can cook down pond scum to get some really low quality iron that you could use to make some tools better than stone and wood.
Make basins and pots out of clay or hollowed out logs so you can boil your water since clean water should always be your top priority in any survival situation.