Have a look at this stunning Parallax effect created exclusively with Proto.io. Feel free to import this fully editable project into your own account for use in your prototypes.
This is an interactive prototype of a To-Do app and the UI kit used is provided by invisionApp.
The UI kit can be found at : https://www.invisionapp.com/do
Project using Variables to simulate Drag and Drop to Snap functionality into a predefined area. While also adding Animations and States for a more smooth and elegant process.