What do you use spent coffee grounds for (if anything)?

Curious what folks like to do with spent coffee grounds / espresso pucks / stale beans. Personally have tried to use as fertilizer with limited success, used as a substrate for growing oyster mushrooms, and in cooking (brown bread made with some stale espresso grind really helps the flavor).

Today is the 11,067th day of Eternal September ( )

Eternal September or the September that never ended is Usenet slang for a period beginning around 1993 when Internet service providers began offering Usenet access to many new users. The flood of new users overwhelmed the existing culture for online forums and the ability to enforce existing norms. AOL followed with their Usenet...

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