I have been wanting to build these for sometime now. This was a really easy project hope you enjoy
Step 1: Gather Material
Nails or screws
Hammer or drill
Step 2: Build a Frame
I cut the height at 1 foot and used the longer lengths of the thicker wood of the pallet as the sides found smaller pallets for the other sides
Look at the pictures wow not sure if I explained that right?
Step 3: Fill It the Spaces
I cut the pieces at 1 foot and then put them on the inside to prevent the dirt from pushing the nails out over time really like the way it worked
Step 4: Continue
I cheated and used a nail gun!
Step 5: Move to Desired Location
like I said easy project total cost price of the nails!