Here is a cool project that explores the idea of attaching a backpack drone to a dragonfly or other small insects. DragonflEye has a drone that stays on the dragonfly like a backpack with the electronics and sensors inside.
This micro-aerial vehicle comes with a solar cell that is charged from a light source. As researchers from Draper and Howard Hughes Medical Institute explain, the goal of this project is:
Such tech can be used to reduce the loss of pollinators by monitoring flight patterns and migration. More info is available here.