A collection of helpful UE utilities by Jared Cook
There is a plugin version of the BP-relevant utilities here, if you don't want to touch C++: https://github.com/jdcook/jareds_unreal_utilities_plugin
C++ construction script to lay multiple spline meshes along a long spline. This allows you to make things like racing game loops and corkscrews easily, or lay out decorative repeatable meshes along a spline.