Python 3.8's Assignment Expressions, aka the Walrus operator, feel like an excellent pattern for checking optional environment variables that are only needed to initialize a library like Sentry.
Django Management Command to print a "Magic Link" for one-click log-in. This is nice for people who project switch or don't want to remember passwords.
This TemplateTag simply returns a True when it is Naked CSS Day allowing you to hide your CSS or display a custom message on that date. Allows allows for parameters should the date change (again).
webology has posted 3 snippets.