Some other items.
1. Facemask
2. Headlight- I like those single LED lights that clip to your hat $15 and weigh nothing.
3. Lots of warm clothing- no cotton. Fleece and wool are best bets.
4. Waterproof gloves.
5. Lanyard
6. A Lab
7. Decoy bag- If doing any hiking in backpack style bag, a lightweight chair is nice.