hosts-blocklists - "This repository provides a host and domainname based blocklist specifically designed for use with dnsmasq." Which is to say, a good way to get rid of the crap on the internet if you're moderately technical.
aws-vault-alfred-workflow - "Alfred workflow to Open AWS in your browser via aws-vault," useful if you juggle multiple sets of AWS credentials.
ExploratoryTesting - Essay from Martin Fowler. "I would consider it a red flag if a team isn't doing exploratory testing at all - even if their automated testing was excellent."