I think it's about time we got some furnishings that allowed us to pay tribute to the Twelve Gods. Off the top of my head...

--Outdoor--
Stones displaying individual deity symbols.
An arch similar to that at the Sanctum of the Twelve, that displays all deities' symbols
Spires that display one or all of the deity symbols

--indoor--
Banners displaying individual symbols.
Scripture books with deity symbols on the covers.
A wall-mounted circle featuring the symbols of all deities.