Five Star Gift Ideas

How about a subscription to a premium podcast service like Luminary or Stitcher Premium? He'll have access to ad-free content and exclusive shows. Alternatively, you could consider purchasing him a top-of-the-line pair of headphones or a podcasting microphone so he can create his own content. Another idea is to create a personalized journal specifically for keeping track of his favorite podcasts, including notes on his favorite episodes and quotes from the hosts. This would be a thoughtful and unique gift that he could use every day.

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

Burcin Dalkanat says about Under Lucky Stars star maps:

“It was such a sentimental and romantic present for my husband's birthday (since he is so into astronomy and the moon on the background). The order came super well packaged, and now it is the gem in the basement :)”