For every lab exercise, document the question, setup, commands, expected output, actual output, and what changed. This turns a home lab into a portfolio of evidence-based learning rather than random experimentation.
Save sanitized screenshots, short packet summaries, and log snippets from your own systems. These become strong interview artifacts because they show how you think and validate findings.
Focus on defensive outcomes: troubleshooting, monitoring, exposure validation, and incident-style triage notes.