I was looking to do the following:
\newsavebox\myBox
\def\mySave#1{\savebox\myBox{hello #1}}
\edef\myA{\mySave{one}}
\def\myReadyA{\resizebox{1ex}{1ex}{\usebox\myBox}}
\edef\myB{\mySave{two}}
\def\myReadyB{\resizebox{1ex}{1ex}{\usebox\myBox}}
This would've allowed \myBox to be reusable, instead of writing two separate boxes (\myBoxA with "hello one" and \myBoxB with "hello two").