A bucket for a skid loader has a screw auger with right-hand and left-hand auger fighting which meet in the center on a single shaft. Rotation of the shaft in one direction causes sand or other granular material in the bucket to move toward the end outlets for loading into conventional sandbags. Rotation of the shaft in the opposite direction advances the material in the bucket to the center where it is discharged through a bottom outlet into a bulk bag such as an FIBC bag which is supported on tubes suspended from the bucket on lines. A cover is releasably attached to the bucket to block the bottom outlet when a bulk bag is not being filled.