Boyfriend loves Charborg

A girlfriend in need of assistance: My boyfriend really loves watching Charborg and has been tuning in to streams of two others just to keep seeing Charborg content. I'm not a follower of streamers/youtubers/etc, but my understanding is that most don't have their own merch. I'd like to gift "something Charborg". Is there a quote that Charborg is known for/says a lot that I could get printed on something? Or what's your favorite Charborg line and/or character?