Build a strong wheel barrow with removable walls for easier dumping and increased versatility. Make this wheel barrel from wood and a couple of old bicycles; it can double as a cart for moving or carrying loads for longer distances. Fill the wheel barrel with straw or anything else and see how much it can hold.
Make an H-shaped frame by cutting two 2-by-4 studs (boards) into 4-and-a-half-feet-long stud pieces. Cut four 3-foot sections for the cross braces. Attach four cross braces to bridge the two 4-and-a-half foot 2-by-4s. One cross brace should be at one end and mounted between the two long boards. Mount the next cross brace 4 feet toward the other end. Mount the other two boards 17 inches toward the center from each of the short boards already attached.
Use steel angle brackets and short deck screws to attach the wood together.
Cut a plywood board to fit over the frame. Make the length 4 feet long by 3 feet 4 inches wide. The plywood "bed" should not hang over the edges of the wheel barrel.
Drill a vertical hole in each of the longest 2-by-4s that are the circumference of the pipes of the bicycle forks where they slide into the frame. Drill both these holes 2 feet from the front edge and through the plywood. Use pipe clamps on either side (top and bottom) of the fork's pipe once in the hole to keep them in place. Make sure to place the clamps so both wheels are even and the bed is level.
(Optional step.) Modify the wheels by changing the inner tubes to foam tubes, which won't get punctured like bicycle wheels will. Follow the directions that come with the product.
Carve handles to make them more comfortable by cutting the rough shape of a handle using a rasp at first and then sand paper to smooth out the wood. Use tool handle dip on the handles of the wheel barrel to make them extra comfortable.
Add fence rail brackets around the wheel barrel to hold sections of 2-by-4 into vertical positions. Cut 12-inch 2-by-4s and slide them into the rail brackets so they stick up near each corner (four inches from the corner itself). Screw in left-over plywood sections to these sticks. The left-over sections can be in strips about 5 inches wide and 3 or 4 feet long (depending on whether it is to be placed widthwise or lengthwise).