Is there a (free) cart module with thumbs of products and which is more fancy than the default module delivered by VM allinone ?
"Fancy" depends on your personal taste and on how much attention your template provider paid to the typography and style. There are quite a lot templates which i.e. pay attention only to a fancy slideshow and other funky stuff, but don't pay any attention to typography and style. Below is a screenshot of what the default VM cart view looks like in the free template I'm using. It does look different with other Joomla templates.
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