Here's a list of the top 20 figures of speech. There are many more. Please consult this list or some other one when writing figurative sentences for your Word Quest. The list is from about.com.

The Top 20 Figures
1. Alliteration
Repetition of an initial consonant sound.

2. Anaphora
Repetition of the same word or phrase at the beginning of successive clauses or verses.

3. Antithesis
The juxtaposition of contrasting ideas in balanced phrases.

4. Apostrophe
Breaking off discourse to address some absent person or thing, some abstract quality, an inanimate object, or a nonexistent character.

5. Assonance
Identity or similarity in sound between internal vowels in neighboring words.