Marble Run Kit for Blender - v2.5 flypast
I've made a kit of parts in Blender for building marble runs.
There are over two hundred types of track to try out, including slides, ramps, tunnels, spirals, splits and bends. I've also built and included variously coloured terrazzo, granite, metallic and transparent materials for building a classy looking track.
v2.5 has some new track pieces.
It's free - get it from https://dpt.itch.io/marble-kit