VM3 : product on VM cart page (like charity/donation)

[naxmt]

Hello, I am looking for a plugin / module for my customer. Products (like charity/donation) show only on virtuemart cart page.
Function:
- vendor may create own product/s to show on cart
- price of contribute update final cart price
- info email sent to non profit organization
- customer can chceck if he want to recieve newsletter from non-profit org.

Customer should be able to contribute in this way a non-profit organization.

Thank you for help