Here are two articles containing techniques for building examples with certain properties. The emphasis here is on the word "building": one specifically designs the examples to have the properties in question, and one builds them up step by step. This page needs some general discussion. It also needs links to articles that are less set-theoretic in flavour. Suggested titles welcome; actual articles even more so.

How to use Zorn's lemma.

Just-do-it proofs.