With Lucide Lab or custom icons
Lucide Lab is a collection of icons that are not part of the Lucide main library.
While they aren't provided as standalone components, they can be still be passed to the LucideIcon component the same way as official icons:
Directly as LucideIconData
As a provided icon by name
Creating custom icon components
You can also create your own standalone icon components using LucideIconBase.
Be sure to use an SVG element selector, e.g. svg[lucide{IconName}]