Here’s a suggestion: How about placing a maxim in Greek or Latin at the top of the Forum board… a new one each day?
Some days a well known saying, and other days maybe a quote from Homer or some other source.
Or maybe a new forum area called “quote of the day” where a new thread can be posted each day with the day’s quote.
Just a suggestion. I have no idea how much extra programming work that would require. 
It might not be bad as a board, because then people could post their translations of the quote and comment on it. I’m not sure we’d need a new board for that though. If people are interested a ‘Quote of the Day Thread’ should be enough, the quotes could all be posted in that thread together with discussions on them. It would take some organising though… as in who’ll post quotes when.
γῆς ἐπέβην γυμνός,
γυμνός θ’ ὑπὸ γαῖαν ἄπειμι·
καὶ τί μάτην μοχθῶ,
γυμνὸν ὁρῶν τὸ τέλος;
Or what about a new word or short phrase or quote every day? Like one of those word-a-day calendars? Something you can´t help seeing & therefore learning.