What's a good costume ideas that I could 3D print some accessories for?

I will be going to Germany for a school trip soon, and one of the locations we will be visiting is a castle, and we have to bring a costume that fits a monarch kind of role (think kings, queens, that sort).

What are some good costume ideas where I could easily 3D print some nice accessories (like a staff)? I believe it can be costumes of fictional characters too, as long as it's related to the theme.

I only have white, orange, and purple PLA filament, but I could look into painting some parts. I will need to pack for the trip in a couple weeks time, so something that is quick to print is ideal. My printer has a build volume of 256mm in all three dimensions.

I would prefer a costume that isn't ridiculously over the top or royal. My initial idea was to look like a modern day monarch, but the suits and ties they wear are expensive and uncomfortable too. I would rather go with fictional characters who live in castles and are monarchs, as they usually have more interesting designs than the stereotypical "red robe and furskins with golden crown".

edit: Somebody has already suggested the Lego Knight, and I think stuff like that is pretty cool! Not stereotypically over the top with very simple designs that are relatively easy to print (big shapes, limited colours, etc.)

Hollow Knight characters also sound really cool, I like the games and the designs are very easy to recreate, especially since I already have white filament.

Does anyone have similar suggestions that have good, simple designs that are easy to print?