… and that I use a lot!

Simplify page and margin size


1.5 or double spacing


Tabular cell vertical spacing


Change list item separation

       \itemsep 1ex      

Change spacing around equations


Spacing between bibliography items


Nice customizable bibliography style by Shiro Takeda


Quick columns environment snippet


Formatting beamer slides tips from Paul Goldsmith-Pinkham

Generate a list of table and figures with corresponding latex file line number for replication packages