Assuming that all of us will be doing some writing this summer, I thought I'd share one of the best language resources I've encountered, my all-time favorite thesaurus:

http://www.visualthesaurus.com/

Instead of merely listing a word's synonyms, it groups them together in organic, visual patterns that reflect clusters of meaning. The interface is very intuitive and allows you to quickly find the half-forgotten word you were looking for, or if you're like me, just meander through connotations and strange, subtle connections between words. Just try it. It's awesome. Hopefully you'll find it to be as useful as I do!