I recently stumbled upon one interesting project based on Twitter Bootstrap, and since I am now doing the interface and based on Bootstrap, some elements will be very useful to me, I decided to share the find with the community.
Fuel UX is a set of scripts and styles for easy modern interfaces. Namely, to create user-friendly controls.

Available controls:
Combobox - includes drop-down list and input box

Datagrid - displays data in the form of a table with pagination, search, sorting

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Pillbox - allows you to manage selected values and make them colored in a specific color.

Search - search form

Spinner - convenient digital input

Demo:
http://exacttarget.github.com/fuelux/Project on github