This is my planet eater:
You simply release it and it eats the planet for you.
It takes some time but it does the job. (usually, depending on the planet and your luck)
It ate 4 planets succesfully in my tests but it's seriously slow, it took nearly 30 minutes for it to eat Planet Fude.(Diameter: 484 meters)
(And that's why I combined many screenshots to make the GIF above, it could be better but it's boring to look at a computer screen for half an hour : )
If you want to try it or make it better, here's the drone:
Planet Eater
If someone didn't do this before, I want to join the competition with this GIF too.