Shovel: https://3dwarehouse.sketchup.com/model/bd13cf75-09ee-469f-acb6-28e97a89b4c8/鐵鏟-鏟子-shovel
Bird: https://assetstore.unity.com/packages/3d/characters/animals/living-birds-15649
Butterfly: https://assetstore.unity.com/packages/3d/characters/animals/butterfly-animated-58355
Terrain: https://assetstore.unity.com/packages/3d/environments/fantasy-landscape-103573
Skybox: https://assetstore.unity.com/packages/3d/environments/nature-starter-kit-2-52977
Rain: https://assetstore.unity.com/packages/vfx/particles/environment/water-fx-pack-19248
Rain cloud: https://4vector.com/free-vector/rain-cloud-clip-art-109955
Sunflower: https://free3d.com/3d-model/flowers-low-poly-99889.html
Orange flower: https://www.turbosquid.com/FullPreview/Index.cfm/ID/1116825
White flower: https://3dwarehouse.sketchup.com/model/ud515ca44-c795-48f1-883a-2cd39d7b5f80/Flowers-set
Purple Flower: https://www.turbosquid.com/FullPreview/Index.cfm/ID/714595
Rose: https://www.turbosquid.com/3d-models/free-rose-3d-model/159030