5S + 1 (process improvement)

1. Sort - remove unneeded item from the immediate workspace
2. Straighten or set in order - position items strategically in their place
3. Shine or sweep - clean the area
4. Standardize - make the first 3 S's part of daily activity
5. Sustain or self-discipline - accountability, audit, and maintain
6. Safety - periodic audits for a safe environment

source: https://www.linkedin.com/learning/lean-six-sigma-analyze-improve-and-control-tools/5s