What all do i need for deiter's in cantle meadow on saddle isle riddle on Horseisle?

1. Feather
2. Blueberry and Blackberry
3. Apple
4. Orange
5. Grasshopper
6. Mushroom
7. Coconut
8. Candy Cane
9. Dandelion
10. Thimbleberry

Alexandra (Chestnut)