This plugin will display a button allowing the customer to clone a former order (Copy all products from the order to the current cart).
By default, the button is displayed on the order detail page but can also be displayed in the order list with a small template change.
You can even use it in an article, a module or a product detail by adding a custom tag referencing the order to clone and use the plugin as a 'templated cart'

A coupon can be applied by default
Option to reset the cart before adding the products again
Customizable text and style
No personnal information from the order is cloned, just the items list
Out of stock items will not be added if Virtuemart is configured check stocks
Clone every order, even one you have defined on purpose