A ditch cover assembly, an accessory attachment clip, and an interchangeable roof accessory system for a vehicle are disclosed. An accessory attachment clip may generally include an elongated body having a first end, a second end, and a mid-portion disposed between the first and second ends, at least one securement mechanism disposed along the body for retaining an accessory, and at least one aperture disposed between the first end and the second end operable to receive a fastener to secure the body to the vehicle.