I'm developing an interactive map for a local community WiFi network, where upcoming groups/meetings/alerts/etc. can be "dropped" onto the map, based on location. Through user engagement over time, some of these "dropped" items might grow or change in some way, so a visual representation of active areas of the community can be naturally conveyed.
I'm searching for metaphors to convey this "drop and growth" mechanic, that may reflect upon an isometric-style game (i.e. The Sims, but real), growth of plants, or other visuals. A quick prototype of "unreal" buildings representing non-tangible groups in the community, that may change over time:
The same map interface will double as a scavenger hunt/collection game of some kind for kids in the community, but I don't know where to begin in developing a strong visual narrative/allegory around this interactive map for informational purposes. Any hints on where to find inspiration?