What do you think of poetry? How about writing a poem?
If you have ever tried to, you know how difficult it may be to find a good rhyme while also preserving the idea. One of the ways to facilitate the process is to use a rhyming dictionary. Of course, it cannot do all the creative work, but it can give you some extra ideas or help with the word you were thinking about, but could not remember. Here is the link: http://www.rhymezone.com/
In addition to just rhyming words, this dictionary also provides examples of these words as well as definitions, antonyms, and synonyms.