Well, the Playmo katana slides in the belt well enough, but the hand guard sits way above the belt and the pommel comes up to his chin which looks silly (to me).
Bushy eyebrows is kind of the look I was going for. They could pass as just the eyes, just bushy eyebrows or a simplified combination
The brand of glue I used for the sword is generic. It is a super cheapy brand. I think "Loctite" brand superglue is the best. It's what my dad uses for his custom stuff.
You can find parts among existing Playmobil for all kinds of things. One of the things it occured to me to use for sandal straps on sandals was a mustache from a full beard

---Upgraded my samurai a bit. Decided to try eyes seperate from bushy eyebrows. Can't decide which I like better.