Icons for Objects and Adjustment

Have a picture!

alt text

Essentially what I want is to create smaller, less detailed icons which, when they cross a border, will become full sized documents. Think of it in a similar way to Papers, Please, wherein the desk gets filled with documents and can be re-stored as less detailed icons in an inventory.

I am aware that I need to create the icons myself, but what I’d like to do is drag the less detailed icon out and then have the bigger object replace it, and vice versa. Any tips on how to make this work?

Thanks!

This is the information that you need: