Edit: it's now available as a Tier 2 reward on my Patreon: https://www.patreon.com/GhislainGir
Here's a small blueprint I made in Unreal Engine in 2021 for my 'Interactive Grass' demo: https://www.youtube.com/watch?v=Mufb1KU2V0A
It allows me to spawn and place quickly and efficiently rocks using Instanced Static Mesh Components and Construction Scripts.
It is a good example of simple things you can do in Unreal Engine using Construction Scripts to help you boost the speed of a production by allowing artists and level designers to place props in a more efficient way.