Where I work, we ask candidates to do a take-home task after they've passed the first in-person interview. The take-home task is trivial, something most developers with a few years experience should be able to knock out in less than an hour. All components of it are easily googleable.
The advantage is that we're building a corpus of solutions to the same problem that we can compare against each other, which is interesting. More importantly, we're building a corpus of solutions that we can then pick from to have the candidate analyze in-person, and talk us through what they see, what they'd do differently, what they like/don't like, etc.
In short, we familiarize them with the problem via their own answer, and then ask them to analyze someone else's (anonymized) answer. Our sample set so far is too small to draw definitive conclusions from, but it feels better than our old ways of doing things.
The advantage is that we're building a corpus of solutions to the same problem that we can compare against each other, which is interesting. More importantly, we're building a corpus of solutions that we can then pick from to have the candidate analyze in-person, and talk us through what they see, what they'd do differently, what they like/don't like, etc.
In short, we familiarize them with the problem via their own answer, and then ask them to analyze someone else's (anonymized) answer. Our sample set so far is too small to draw definitive conclusions from, but it feels better than our old ways of doing things.