Ground-down pavement particles that can be spread and compacted. You can find these at asphalt contractors like E.R. Snell .
Choose a supplier close to your job site to minimize heavy delivery fees.
Many local supply yards stock recycled asphalt specifically for driveways and roadbases. Search for terms like "landscaping materials near me" to find local yards like Bedrock Landscaping Material or All Natural Stone & Grass .