Here you can use banking system's deposit management system, like multiple banks handle, customers profile and its balance, transaction details and notification you can send also print transaction recepit.
Provides an example module for OWL.
Model's Attribute
Odoo 15 Development Tutorials
Odoo 16 Development Tutorials
Odoo CLI Commands Tutorial
CSV vs XML data file Tutorial
Odoo Tutorials
Odoo Development Tutorial
Odoo ORM Fields Development Tutorial
ORM Methods Development Tutorial
Housing Module
Adds SMS features on quotations and sale orders
Sale Quotation
Hospital Management with patient,appointment,medicine info
Tutorial about how to add SMS functionality to a model
Tutorial about how to create and use activity views
Tutorial about how to add the archiving feature on a model
Tutorial about how to optimize SEO, create metadata dynamically and creating custom social media previews.