That's great! Here are a few ideas:
1. A guidebook on mushroom hunting- You can find different types of books according to his experience level along with detailed knowledge of mushrooms.
2. A mushroom hunting kit- This kit includes a basket or bag, knife, gloves, and a hand trowel which will make his hunting more easy.
3. Mushroom field guide - This might be perfect for your grandson as it will help him to identify mushrooms he finds while hunting.
4. A mushroom identification class - Look for a class in your grandson's area or even online. This will help him improve his skills of finding the edible mushrooms.
5. Mushroom grow kit - As he enjoys finding mushrooms, why not gift him a kit to grow mushrooms at home? This way he can continue to enjoy the hobby even in the off season.
Hope these ideas help!
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