Use Extended Events to easily measure the duration of queries with different batch sizes, so you can find the optimal.
A useful script to collate index usage stats across multiple AG replicas to help ensure you don't drop indexes that are unused on the primary, but vital on the secondary.
A quick code snippet to help find members of the local admin group.
Managing work/life balance - something I'm not great at, but I have some tips.
Using dbatools to find patterns within your database code.