IDFinder is a very simple and easy to use plugin. Once installed, grab yourself a bone (configurable) and right click on any block that you want the data value of. It should send you a message saying the name of the block and the data value.
Features:
Permission Nodes
IDF.find = allows players to find id's by right-clicking blocks with a bone
Upcoming Features
Big Thanks To
@Muddr @h31ix @Seadragon91
Change Log
v2.0 - Configurable tool added
v1.1 - Support for permissions added
v1.0 - Initial Release
Suggest some improvements below!