So I've got a coworker who has helped myself and my team immensely. I want to get him something nice for the holidays but I don't know much about him he doesn't share much. Here's what I know. Hes in his late 20's Korean-American, single, works in a pharmacy but doesn't think of it as a career. He works roughly 80 hours a week and that's practically all he does. He spends little time at home as he seems to enjoy being called upon to help (hence why he works so much). He's got gift cards that have sat unused to a variety of places. I don't think possessions are important to him and neither are his finances as he will regularly purchase food for his coworkers and refuse to accept payment. The only thing I know is that he likes ecology but he hasn't gone in to that. I think he wanted to do something in the field originally.
I'm hoping for a gift idea for the holidays. potentially something that would be nice to look at but doesn't require any effort to appreciate (like how a book would require the time to read it). Anyone have any suggestions at all. Budget probably goes up to a few hundred USD at most but would also be content with something cheaper as I don't think price will matter to him. I just want to find something I think he'll appreciate.