Hi @danmurrell ,
The Easify Product Options app (free plan available) can assist you in setting up those custom text fields for all of your products in just a few minutes 
. Here’s an example:
In-app setup using Text Area (long text field) & Text Box (short text field):
If you wish to hide the text fields to display only when customers opt for customization, you can add a Checkbox. Then, apply Conditional logic so the above text fields only appear when the checkbox is selected. For example:
