What internship opportunities, Fellowships, External Research Grants (Preferably Paid) are specifically catered towards PhD students in Economics? To name a few I know of Amazon, Microsoft, Uber, and United Nations (Unpaid or very modest stipend unfortunately).
Generally, departments do a better job about informing students of grants, fellowships, so I would like internships to be the sole of focus of this question, but you are welcome to post about other opportunities that are not institution specific.