I'm coming to you as a relative outsider with a suggestion for a month-long themed event, but it was suggested in chat that either this might not be something the community would want to take part in, or that there would be a preference for other events?
So I'm going to guage the community for the general case first before diving into my suggestion!
I'm currently thinking of art events, instead of craft ones, but I'm open to all ideas.
The proposed format would be to set a theme for a month, with or without daily prompts, that could elicit Q&A on the main site, as will as encourage users to learn new skills and techniques. You might even want to post your work to a community gallery.
Let me know the communities thoughts on this idea, and I'll post my suggestion shortly afterwards!