CargoLoc 58 in. D x 18 in. W x 18 in. H Hitch Mount Cargo Bag 32510 - The Home Depot
MaxxHaul Universal Steel Hitch Mount Folding Cargo Carrier | Fits 2-Inch Hitch | 500lb Capacity | 60-inx21-in with High Side Rails in the Truck Tool Box & Cargo Accessories department at Lowes.com
Reese Hitch Mount Cargo Carrier 48" x 20" 2" Receiver 500 lbs. Capacity (6502) - Johnson's Surplus LLC