[Auftot]

If your just starting you should definitely practice with food companies just to understand more and have experience.
Then I would move onto Logitech, they only sometimes require a return. And their products are resellable.
Next I would do some earbuds, these are very light so when asked to return you can box them very easily.
Then I would move to companies with slightly heavier product. This is as so you can learn to dry ice box.

That's just my advice. Good luck and if you have any questions feel free just to ask.

I'm planning to get into SE as well. so thanks for this very helpful.
By food companies you are referring to companies around your area? Like let's say call pizzahut and tell them you got something in your pizza or that after you have ate the pizza you needed to go to the doctor. Things like that?

Yes this and also other food e.g. chocolate and gum...