This is Zazzle's Public Library Of Science keychains page, where you'll find a unique assortment of Public Library Of Science keychains set up for personalization or purchase. Almost all Zazzle keychains are shipped within 24 hours. Buy your favorite designs on premium metal keychains with round or square charms. Personalize keychain orders of all sizes. Upload your designs at no cost! To see more products, please visit our main public library of science section.