Dani Bragau wrote this step-by-step guide to show you how to Move a Salesforce Component from an Organisation to Another Organisation using an Unmanaged Package.
This guide focuses on Flows but you can move many other Components (such as Apps, Custom Fields, Lightning Pages, Permission Sets, Record Types, Recommendation Strategy, Apex Class, etc.) between unrelated Salesforce organisations using unmanaged packages.
This is a great way to save time by building once, then reusing.
You can read and print this guide here.