Two 5 shelf wire racks from Target, Rubbermaid totes, 18 gallon. Don't buy the clear ones, they shatter when you drop them.
2 for saddles
1 for handlebars
1 for brakes/levers
1 for derailleurs
1 for pedals
1 for cranks, chainrings
1 for high value components, individually bagged
1 for new parts in boxes
Couple of old kitchen cabinet drawer boxes for seat posts, reflectors, kickstands, etc.
Cables bought in bulk boxes.