What does House Embroidery Ribbon do in CK3?

Monthly Renown +3% (patch 1.20.0.3).

How do you get House Embroidery Ribbon with the console?

effect generate_romantic_trinket_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).

Personal artifact · Trinket

House Embroidery Ribbon

MasterworkTours and Tournaments

House Embroidery Ribbon is a masterwork trinket artifact in Crusader Kings III: Monthly Renown +3%. Quality 25 and wealth 25; maximum durability 75. It needs Tours and Tournaments. Patch 1.20.0.3, from game/common/scripted_effects/02_ep2_artifact_effects.txt.

Quick answers (2)

What does House Embroidery Ribbon do in CK3?: Monthly Renown +3% (patch 1.20.0.3).
How do you get House Embroidery Ribbon with the console?: effect generate_romantic_trinket_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).

A carefully embroidered ribbon, displaying … house motto.

Effects

Monthly Renown+3%

How it is made

The game creates it with the scripted effect generate_romantic_trinket_effect. In the console (how to open it), this gives it to the character you play:

effect generate_romantic_trinket_effect = { OWNER = root }

Built from the effect's file; not run in the game by us.

Source: game/common/scripted_effects/02_ep2_artifact_effects.txt, common/modifiers (artifact_monthly_dynasty_prestige_2_modifier) and the English localisation, Crusader Kings III 1.20.0.3.