It was in the late 21st Century when SkyPad first experimented with modular airborne housing. Done at the time as a response to overcrowding in parts of Asia, the early lightweight rectangular living modules were a great success. Despite some early issues associated with waste disposal, once SkyPad adapted processes for such things exploiting technology used by space travelers, this approach to dealing with overpopulated parts of the planet became mainstream.
For years however, all pods were identical rectangular units that could be fitted together to form a floating district. Each unit however could rapidly and selectively be disconnected from the whole for maintenance or refurbishment.
A recent collaboration between SkyPad and Duplo has finally broken the architectural mould for floating districts. People can now purchase living pods in a full range of colours and shapes. This means that not everyone now needs to live in an airpod with regularly shaped rooms. The Psychological Directorate for Healthy Living has applauded this change as a major step towards addressing a range of personality disorders linked to airpod sickness that can be associated with the bland regularity of traditional airpods.