One can create an operating activity by coaxing hams to turn their radios on in some odd place, log contacts from around the world, and then offer some sort of leader board online. reddit 
This is a post-internet variation of the long tradition of collecting contacts of DX for foreign countries and FD for field day operating one weekend with emergency power.
http://search.fed.wiki.org:3030/spots-ota/DX HEIGHT 300
activities
POTA — Parks on the Air activating first national parks now all kinds of parks. site
http://search.fed.wiki.org:3030/spots-ota/POTA
SOTA — Summits on the Air activating high and sometimes inaccessible places. site
http://search.fed.wiki.org:3030/spots-ota/SOTA
VOTA — Volunteers on the Air activating ARRL volunteers in various capacity for one year only. site
http://search.fed.wiki.org:3030/spots-ota/VOTA
IOTA — Islands on the Air activating places surrounded by water, some small and remote. site
http://search.fed.wiki.org:3030/spots-ota/IOTA
JOTA — Jamboree on the Air activating the annual boy scout camping event. site
http://search.fed.wiki.org:3030/spots-ota/JOTA
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Compare these two-way radio events with similar activities based on GPS satellite locations.
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pages/things-on-the-air
http://ft8.ward.asia.wiki.org/assets/pages/things-on-the-air/plot-ota.html HEIGHT 500
We count CQ VOTA calls and plot them hour by hour based on a spot query. See Spots Database Explored
A server-side endpoint runs the query. github
A client-side html script plots the result. github