Six or so use cases of smaller single geometry nodes concepts. Thanks to HDRI Haven, I think there's an HDRI packed in here from them. Blender 2.93 required currently.

**Grid objects:** the monkey fills with cubes on a snapped grid. Adjust the grid size with the value node.

**Mask by height:** the hemisphere hat will clip geometry based on the B value in Attribute Compare.

**Geometry proximity:** the cones populating the ring shrink base on proximity to the cube. It scales by geometry, NOT volume, so it's hacked to have internal cube geometry

**Random cones align:** they all kinda point toward the mesh's bounding box center

**Separate by Texture:** a bitmap path clears out points, and the remaining points are separated into grass vs. flowers using a voronoi texture.

**Texture to height:** the points' Z height is driven by the same voronoi texture