I sometimes fantasize about setting up a website or a kickstarter that lets people send balloons with the $9 chip, GPS, and tiny fans that will guide it any point in the map. The problem with weather balloons that are being sent from South Korea is that 1) Korean government are too much of a pussy to aggravate North (given their lack of response after naval ship attack and island shelling) so they attack activists 2) The weather balloons mostly end up in unreachable places, no way of knowing if it was successful.
It would be like a website or a kickstarter where people could pay to send packages that include communication equipment, non perishable food items, medkits, insurgency, guerilla warfare, etc.
Imagine the impact this would have on North Korea when suddenly the citizens are communicating anonymously with each other and outside world.
This can only be done if the balloons could self guide themselves using GPS with a high degree of accuracy, and they be launched outside of South Korea. Maybe it can be done from America but the pacific ocean is turbulent and it will be tough to make it all the way in to North Korea. Japan is the best bet but South Korea will probably pressure them. So this leaves out launching it directly from the States, the challenge and costs go up dramatically since the journey must be made across pacific ocean.