/r/eurovision, although the season just ended so it would be a bit quiet right now anyway.
/r/fantasyfootball, that season is just about to kick off so would be good timing
If you'd asked this a day earlier I'd have said /r/casualUK but we now have [email protected]
And the various specific craft subs. Currently we're posting all craft projects to [email protected] but sooner rather than later I think it'll have to be split up into individual crafts because if there's one thing crafters love even more than the actual making stuff, it's showing off the stuff we made.