The Simple Entities module allows Drupal developers to easily create their own Entity implementations. This breaks Entities down to the lowest-common-denominator so with just a few simple lines of code code, developers can have their modules loading and saving data benefiting from Drupal's Entity system.
Packaged with this module is a sub module called se_example. The se-example module demonstrates the bare minimums required to get custom Entities working with the SE module. This includes basic CRUD functionality along with interfacing the Entity with form submissions.