Upgrade Sales Option

[togglewa]

Hello,

I apologise if this has been answered elsewhere, though I've searched and what I have read doesn't give me what I want or I'm not understanding it.

Using:
- Joomla 2.5.8
- Virtuemart 2.0.18a
- Template beez_20 but I can use any template, I just have to work out how to do this first.

I only have a localhost version at the moment, but if needed I can create an online version of the default installation to mess around on?

This is what I'm trying to do:
'In short: When a customer gets to the checkout, they also have what we can call an upgraded sale where they can add balloons, teddy bears etc.'

Extra checkout options that adds to the total price, so I'll have like 20 checkboxes, some multiple drop downs etc.. as above: balloons.. teddy bears etc..
It doesn't have to link to a product page or anything, just have a checkbox/drop down and label next to it and maybe an option to add a small picture if not to hard..
They select some extra options like tick balloons or nothing and proceed with checkout.
If they select balloons it just adds the set price to the overall price..

Any guidance on this would be GREATLY appreciated..

Daniel