I’d add a few more:
20. Grandma’s barn
21. Swallowtail butterfly wings and tomato worms (that’s what we called the caterpillars that we plucked from the tomato vines)
22. Soup on the stove
23. Cinnamon rolls in the oven
24. Ditch water
25. Mini bike exhaust
26. Shoe polish on Saturday evenings
27. Dad’s shop, old grease and welding rods
28. Raisins drying in the sun
29. An orchard full of ripe plums
30. Old Spice aftershave