020 Prime Logo Neon Monument Sign
030 isometric illustration cloud library
040 isometric illustration island
050 isometric illustration d50e5532910095.57 060 rendezvous at the arches
070 bedroom concrete demo scene
080 breezy studio
090 bootleg chocolate
This ancient Blender 2.4x file on blendswap (excavator) has an interesting approach to parenting/grouping. On one particular Layer (Collection) they have placed every Empty that is the parent of logical groups of objects.
They have hidden that layer to reduce visual clutter. Whenever they need to move a “group” they would show that layer to find the group parent.