How to display instances of a field (field collection) in tabs? I have a content type with a field which has a number of instances (actually, it's a Field Collection with a vimeo embed and a text field). I would like to have each instance of the field to be shown as a tab? Field Group seems like a natural candidate for this role, but from what i understand it enables me only to build tabs for particular fields, not fields instances.      

The way I'd dream this functionality to be is:
1) I add another field to my field collection named, say, "Tab title"
2) In "manage display" of the node I set the display of the field to be of "tabbed instance" type.
3) In settings of this display I set the title of the tab to be the new field introduced in 1) by Token.
Of course, any other way of acieving the goal would be also most welcome.
Is there a simple way to obtain such a functionality?
Someone up there likes you...
Field Collection Tab formatter

Field collection tabs provides a field formatter that allows you to output a multi value field collection field as a tabset, with one tab per field collection item.
Features
You can optionally choose a field from the field collection item to be used as the tab title.

It's uncannily close to what you're asking for. Your question might as well have been the user story that inspired that module :)