In this dream I was in a store and asked for "something to aid mental clarity".

A salesclerk went away and came back with a bag containing a powder. He handed it to me, and I looked on the label. This label was written in symbols that vaguely resembled ordinary letters, but not enough to spell a word, or a name. I instantly became lucid because of this.

Wasn't that really nice of the dream? And ingenious?