What's your experience on "Take Home" coding questions for Interviewees?

So in my quest for a new job, I've come across some companies that either give "take home" coding questions to potential Interview Candidates on the very first round or in the mid rounds of the interview process. Nature of the problems are usually language agnostic in the form of some terminal driven application.

Just wondering, have you given a take home coding question to a potential candidate? Typically how long would you expect the candidate to respond with a solution? If you've taken one, how long did it take you to respond, and how much did you write? Curious to see how common these kinds of "projects" are in the typical recruitment process.

As a contribution, I've recently received one as a first round interview question. A simple terminal app that asks you to draw simple lines and rectangles on a terminal canvas. They judge you on error handling, design and test coverage. I've spent at least 3 whole days on it (and a few late night hours in between after work). It's been about two weeks and I'm about to send my solution back. Have I taken too long?