The main thing I add are sidewalks, but I also do paths, crossings, streams, ponds, land use areas (playgrounds, grass, traffic islands, etc.), some buildings/structures (apartments, schools, isolated single buildings, gazebos, etc.), and points for things like flag poles, drains, and fire hydrants. Larger things I’ve done:

• East Aurora sidewalks
• Tinley Park sidewalks
• Earlville, IL sidewalks and other
• Lots of Leaf River, IL
• Manhattan, IL
• Troy Hofer Elementary School
• Braidwood, IL and surrounding lakes/streams
• Pingree Grove, IL road updates, parks, sidewalks, paths, ponds, +
• Much of the Mill Creek neighborhood in Geneva, IL
• Many sidewalks in Plainfield, Romeoville, Bolingbrook, Naperville, and surroundings.

All edits are manual, in good faith, and mostly using aerial imagery.