My suggestion here is to add some new pieces of furniture : "custom standards and crests" to display in our estates.
With this feature, one would be able to craft blank items :
banner (tailoring) /
panel (woodworking) /
shield of arms (blacksmithing) /
sigil (stonecrafting/enchanting) ... and why not,
wax-tablet (provisioning).
(I admit I have no relevant idea for alchemy there! haha)
Then you could use a special menu - I imagine it as a new tab into the regular editor when you're in your house - where to "print" this type of blank furniture.
The system would use the very same pattern like the Tabard creation menu in guilds.
The skin of the blank items could be already-existing basis such as:
-banners
-panels
-coats of arms
-sigils
People could display the heraldry of their own house and roleplay party, mimic the emblems of their guilds or teams, even work on some fancy daedric text, ritual site, and so much creative things...
What would you think about this ?