Five Star Gift Ideas

That's a thoughtful idea! Here are some gift ideas that might be perfect for your grandpa:

1. Subscription to a rock collecting magazine: This would be a great way for your grandpa to learn more about his hobby and discover new rocks to collect.

2. Personalized engraved rock: You could find a special rock and have his name or a personal message engraved on it.

3. A rock tumbler: With a rock tumbler, your grandpa can polish his rocks and make them shiny and smooth.

4. Rock collecting book: There are many books out there that focus on specific types of rocks, like minerals or fossils. This gift could help your grandpa expand his collection knowledge.

5. A rock kit: If your grandpa is just starting out, a kit with a few different types of rocks and a guidebook might be a great gift to get him started.

Or you can get him a star map with an important date you share.