"Free" is a word that most artists prefer not to hear. Whether it is a non-profit looking for a donation for an auction to raise money, a private entity wanting original art for a low price, or a company wanting your art in exchange for exposure, no artist wants his or her work to be devalued. Giving away art is usually the opposite of what a professional artist wants to or should do with their work.
If you are looking to get started using encaustic paint in your work, there are some great encaustic sets that provide everything you need to start using this fun and interesting medium, including instructions for how to work with the paint. If you are looking to use the medium for sculpting or texturizing, then be sure you have the right carving tools for the project you envision.