Lieve explains how she used shared actions to create a game. She also details how she labels and groups everything. The labeling system would be usable for many other situations when you have a plethora of objects on a single slide.
Free photos. This list includes a number of sites I haven’t seen elsewhere. Many of these just share a few photos each week, and you’d have to be pretty creative to use them for most corporate e-learning. This isn’t just typical stock photos.