Seconded. I really like the idea of a small homework assignment. Here is the last one I did for an interview: https://github.com/mohaine/expense-allocation

It was a great screen for them and something to talk about durning the interview.

That said you still do need to do some coding during the interview though. We've had enough candidates bring in professional interviewers to solve the coding portion of our remote interviews that there is no way we would trust that the candidate actually solved the homework themselves. We no longer allow any remote interviews due this alone.