Locating Components Within the Model

Maybe ThomThom’s SelectionToys ?

Check the Extension Warehouse (when it’s back online from maintenance.)
If that doesn’t have a find feature, you can use the warehouse’s search feature, try searching on “find components” etc.

If you’ve a mind for Ruby scripting we had a recent topic on locating component instances by their name property (which is separate from their definition’s name property.)
see: Selecting specific components / entities
I’ll add a note (to the linked post,) on how to zoom to the found component instance.