Free RPG art tiles by Henry Software
While poking around the recent history I saw that Sanglorian had posted http://opengameart.org/content/64-16x16-food-sprites that were free CC0 art from a larger commercial set. While looking at the originals I saw that the original artist had more free sets available under a CC0 license.
Free Pixel Gear! (looks like volcanic weapons and armor) is available at https://henrysoftware.itch.io/free-pixel-gear and includes art from the larger set of items at https://henrysoftware.itch.io/pixel-item
Be aware the originals contain Unity information (it appears, I can't check because I don't use Unity) and that there are a number of other files to browse. Please check out those pages for more information and to send comments directly to the artist. The top page is at https://henrysoftware.itch.io/