As a small one-prize set, I'll contribute three items:
Genealogy Standards, 2nd Edition, the 2019 revision of the Board for Certification of Genealogists' reference manual that for the first time includes the addition of DNA as as source data. Thirty-nine people directly contributed to that part of the update, including WikiTreers Blaine Bettinger, Judy Russell, and Karen Stanbary.
Genealogical Proof Standard: Building a Solid Case, 4th Edition, by Christine Rose. It defines the standard and expands on it with detailed explanations of how to apply it to information and evidence.
QuickSheet: Your Stripped-Bare Guide to Citing Sources, a two-sided laminated sheet by Elizabeth Shown Mills that shows the bare-bones essentials of citing the 10 most common types of sources on one side, and on the other side a template that can be used to collect/collate the data from any of those sources to quickly build a citation.
These will be shipped directly from Amazon and, unfortunately, can only ship to the continental U.S.