As far as I know, we don't have any RPG.SE ads to submit to the Community Promo metas on other Stacks. (We have this ad made by Jin for general web promo, but it's the wrong size and shape for Community Promo metas.) Going through our own old Community Promo metas, I noticed that other Stacks have been more organised and proactive about this kind thing than we have — we've mostly been the target of cross-promotion, not the initiators.
So this is where we change that (or not, if the votes say 'meh'). Submit your RPG.SE ad designs below so we can discuss, collaborate, and submit the best of them to our sibling Stacks!
A note on common design types
Judging by other Stacks' promo ads, there are two common approaches to designing ads: general-use and site-customised. General-use ads represent their Stack clearly no matter which other Stack they appear on, while customised ads highlight the crossover that might appeal to a user of the other Stack and entice them to click through to the advertised Stack.
Obviously general gives more reuse of the initial effort, but my impression is that custom is better at getting clicks (and probably votes in their metas). Either would be an improvement over our current none though, and both are useful in different ways, so take this as food for thought when thinking of and voting on designs, rather than guidance on what we "should" make.