Pre-made. pre-lighted storefront windows such as a bakery,toy store,chemist,bookstore,department store etc.
(especially old time ones like from Charles Dickens' London era or an old world village).
I normally use images on billboards, but you have to light them externally at night to see the image and it just doesn't look quite right. Some flat, some beveled. Not transparent, but just for facades that do not have anything inside. Thank you.