Here's my current proposed list of statements for people to (strongly) agree/disagree with -- no neutrality allowed. The idea is to identify people on a farmer/forager axis, and then to cluster people according to similarity (subject to other constraints).

1. If there were cheap, tasteless, food pills that gave you all the sustenance you need, I would barely eat other food.
2. I believe it's everyone's duty to vote.
3. I regularly exercise when I should be working.
4. I think governmental oversight unnecessarily slows down the progress of science.
5. My clothes are definitely more about style than comfort.
6. I believe that travel is over-rated.