We could build flying NPPs, to extend the range of mobile nuclear power deep inland. The Antonov-225 can carry up to 250 tons of cargo, which is more than enough for a small reactor plus nuclear storage.

There were actually programs both in the US and the СССР to create nuclear powered bomber airplanes.

Eventually the programs were scratched. Luckily. It was a bad idea.

Those floating reactors have been in the pipeline for quite a while as far as I understand, I wonder if there have been any setbacks.