Sweet Crêpes
This batter is very adaptable: If you want savory crêpes, simply omit the sugar. For flavored crêpes, replace the vanilla with a flavored extract such as almond, a liquor like rum or brandy, or a flavored liquor such as Kirsch or Amaretto.
Crêpes freeze well—you can make a big batch and stack them, separated by sheets of waxed paper, in a tightly sealed container or plastic bag. Stored this way, they'll keep for several months. Allow them to defrost at room temperature, then reheat as described in the do-ahead instructions below.