You may not like how WordPress’ Categories widget lists categories – particularly if you want to modify the list that’s displayed and hide some categories or have a custom order of categories (rather than alphabetical or by number of posts).
So what’s the easiest way to customise the display of the Categories widget??
Create a new *menu*, add the categories that you want in the order you want them, and add your new menu to the widget area.
So you can go from this: