This is the configuration I use for Home Assistant. Currently, I have Home Assistant running on the official Home Assistant Blue bundle (basically an ODROID-N2+ plus eMMC and a pretty case).
I use packages for the vast majority of my YAML configuration to help group projects together. The packages are located here.
With Home Assistant's recent focus on UI configuration over YAML, many of my recent projects are built directly in the UI and not cleanly separated into packages. That makes this shared configuration less useful for reference, but it makes quick mobile edits significantly easier. Where appropriate, I use Home Assistant's native category and labeling features to group related automations.