Cute headcanons: Theo is a thoughtful gift giver and he gives good massages.
1000% He gives thoughtful gifts. Sometimes of course he finds silly things or gag gifts, but most of the time Theo enjoys finding something thoughtful for people. He especially enjoys making gifts. Since he was a carpenter before he was a sailor, and he has kept up that skill, he loves to make things for people. One of his favorites are things like handmade game sets like chess, or backgammon. He’s also done furniture, models of ships or buildings, and just little decorations.
Massages…idk I haven’t thought about it much. I suppose he would be good at that. I think it depends on the person as he’d probably consider that something very intimate and he tends to shy away from overly-intimate things.