One of my favorite new features of iPadOS 14 is Scribble, which allows me to write directly onto system text inputs using an Apple Pencil. One cool feature of Scribble I just discovered is that it uses the same Text Replacements you can configure for the software keyboard. You can create a Text Replacement in Settings > General > Keyboards > Text Replacement.

All of my Text Replacements are available in Scribble!

This is also a great way to add custom non-dictionary words (like names) to make handwriting recognition more accurate.