>I would post cooking, crafts, tutorials, heyuri exclusive sanpo pictures, local things i dig up from the past and relics, local library reviews, cool link and magnet collections and they would be a good place for OC in general I think.
My advice would be:

A. pick a more appropriate board than Off-Topic for longer-lasting and longer-format threads - u can upload images to up.heyuri.net and link them on Lounge, for example. I don't think it'd be difficult for us to implement a proper hotlinking feature like we've done elsewhere, so u would see up.heyuri.net images without clicking them

B. just maek those threads on Off-Topic anyway and see what happens - we've been through faster periods that still had discussion-oriented threads, not to mention all the other imageboards besides Heyuri that have been capable of the same thing with an order of magnitude more activity. Rule 1 also exists for a reason, and will be more heavily applied if an OP invokes it

C. go to a different website with a slower speed / different idea of what makes a "good" board