[schoen]

It might or might not be easier for people to start by reading the Wikipedia page about this system that maps digits to sounds (which has a huge history and fanbase):

https://en.wikipedia.org/wiki/Mnemonic_major_system

The linked article is an introduction to the system and the author has included some Python tools to help you learn and use it.

[pests]

Slightly off topic and I get your point but I cracked up at myself when I read "maps digits to sounds" and my first thought was "oh like words like seven"