On many sites in the network, there are recurring photo competitions on the respective metas, which are intended as "fun" things to have on the site to get users to congregate and provide a welcome distraction. These generally run every month, with a specific theme related to the site topic that changes every month. Users submit their photos as answers to a designated question on the per-site meta, others can vote for who's submitted the best photo, and whoever has the best votes wins the virtual "prize".
For example, see the photo competition posts on the Travel site. Essentially, there's a theme for every month that's related to travel. (I happen to be running the current month's competition there.)
Should we have a similar competition series here on this site, for aerial photos taken from drones or model aircraft? I believe that this would help drive interest to the meta site and entice more users to participate in this site's curation.