A Blender 4.0 script to export collections into the ../items folder as png images.

Export Items.py

# Renders each collection with Environment to the ./items/ folder

import bpy
import os


base_dir = os.path.dirname(bpy.data.filepath)
items_dir = os.path.join(base_dir, '../', 'items')

if not items_dir:
    raise Exception(f"Looking for {items_dir} but it was not found.")

collections = bpy.context.layer_collection.children

# turn off all collections except Environment
for collection in collections:
    if collection.name != 'Environment':
        collection.exclude = True

for collection in collections:
    if collection.name == 'Environment':
        continue

    # turn the collection on
    collection.exclude = False

    # figure out the filename for the render
    filename = collection.name
    filename = filename.lower().replace(' ', '-')
    render_path = os.path.realpath(os.path.join(items_dir, filename))
    print(f"Rendering {render_path}")

    # render the item png
    bpy.context.scene.render.filepath = render_path
    bpy.ops.render.render(write_still=True)

    # cleanup
    collection.exclude = True