To avoid cluttering the forum, I figure I'll just ask this here as well; how extensive is the prohibition for graven images? As in, what constitutes a graven image?

Is owning artwork depicting a human faces forbidden? What about figurines depicting fictional beings/characters? There is a surprisingly scarce amount of information regarding this mitzvah online.

עָתִיד הַקָּדוֹשׁ בָּרוּךְ הוּא לַעֲשׂוֹת מָחוֹל לַצַּדִּיקִים, וְהוּא יוֹשֵׁב בֵּינֵיהֶם בְּגַן עֵדֶן; וְכָל אֶחָד וְאֶחָד מַרְאֶה בְּאֶצְבָּעוֹ זֶה ה' קִוִּינוּ לוֹ, הִנֵּה אֶלֺקֵינוּ זֶה; קִוִּנוּ לוֹ וְיוֹשִׁיעֵנוּ