A great post for MCL Vaidehi would focus on its niche as a "Typewriter" style font, which is a favorite for professional DTP (Desktop Publishing) and government document formatting in Tamil Nadu. Below are two post ideas tailored for different platforms:

Uyir Ezhuthukkal (Vowels)

In the Vaidehi layout, the vowel keys are typically mapped to the numeric keys and the first row of alphabet keys (QWERTY row).

Advantages

  1. Download a custom keymap manager like Keyman from SIL International or Tamil Keyboard Layout Installer for legacy fonts.
  2. Or, simply memorize the layout and type in any application (Notepad, MS Word) with the font selected.