There are Radios available with integrated solar cells, cranks, batteries and ac adapter plugs, which would provide maximum flexibility in minimum space.
Alternatively, goalzero and harbor freight both offer modular components like small solar panels, battery chargers, and inverters that are compact and portable.

There are even some hand crank 2 amp variable voltage generators with relatively long crank arms on Amazon. Intriguing. The short flimsy cranks on the radios is the biggest drawback.

https://www.amazon.com/HUABAN-Generator-...GBPE64A729X13RM