Has anyone went through the process of making radio buttons in netsuite? If so, what's a good way of creating them?

There is no option in Suite Customization, but we can create using N/ui/ServerWidget module in suite script.

form.addField({
    id: 'id'
    name: 'rb',
    type: serverWidget.FieldType.RADIO,
    label: 'rb',
    source: 'rb'});

I'm pretty sure you have to do something on top of the field display in order to make that radio button useful.