Five Star Gift Ideas

How about a book on cryptozoology, such as "The Field Guide to Cryptozoology" by Loren Coleman or "Cryptozoology A to Z" by Loren Coleman and Jerome Clark? You could also consider getting him a collectible figurine of a well-known cryptid such as Bigfoot, the Loch Ness Monster, or the Chupacabra. Alternatively, you could put together a gift basket with snacks and drinks themed around cryptids, such as Bigfoot Jerky and Loch Ness Monster soda. Or, if he's into puzzles, you could get him a jigsaw puzzle with a picture of a cryptid like Mothman or the Jersey Devil.

Or you can get him a star map with the date when he was born.

Rhea Patterson says about Under Lucky Stars star maps:

“My fiancé loves to look at the stars so this was the perfect gift for his birthday. FUN FACT: Our first date was also the day he asked me to date him!”