Want to practice springs by making sample application.

I work as software engineer..In office my project is on other technologies but on my own I want to practice Spring.I read springs but can someone give me a Use Case to practice Springs.I want to my my own small application to keep in practice with spring concepts Can someone advice me on what kind of application can i make and wht it should do..so that i can practice.Or site where i can see.

Any website will do. A customer/address book website. Simple order entry shopping cart.

Also it is Spring. It is never pluralized as Springs. It is always called Spring or the Spring framework.

Mark

thanks