Five Star Gift Ideas

How about a guided tour of a medieval castle or historical site? You could also get him a book on medieval history to add to his collection or a piece of medieval-inspired artwork or decor for his office or study. If he enjoys games, you could get him a board game or card game set based on medieval themes. Another unique option could be to arrange for him to attend a live-action role-playing game (LARP) event that focuses on medieval times.

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 :)”