550 Paracord Sling. Its not a DIY but it's also not that expensive and if you are already handy with knots and paracord, you could make this by studying the patterns.
10 of the Most Nutritious Fall Wild Edibles 1. Hickory 2. Black Walnut 3. Pine Nuts 4. Hazelnut 5. Beech Nuts 6. Acorn 7. Wild Rice 8. Amaranth 9. Rose Hips 10. Persimmon