Thank you for the question.
You can find a BubbleBar example in our Quick Start Framework application, section RadControls Integration >> BubbleBar.
Currently, this control is not part of our official suite, but it is separately isolated together with two other controls, RadMagnifier and RadCollapsiblePane, in a class library called Telerik.CustomControls. You can find it in our Code Library section: Telerik Custom Controls. For this demonstration several images of our ASP.NET controls have been used, so we do not have any predefined images for New, Open, Save etc. operations. I am sure you can find a good set of icons for those.
If you have additional questions, feel free to contact me.
All the best,
the Telerik team