Having some spare wood you just can't throw away? Well, that's just fine and dandy as you can use it to make yourself a nice garden bench. All you need is the wood, a few pallets and some nails. Well a wood polisher and sandpaper would be nice if you want it to be fancy, but they are not necessary.
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Step 1: Arrange the Pallets in the Form of Your Future Bench
Use them as a "skeleton" for your bench. If they are too width/long, cut them in half.
Step 2: Nailing
Nail the wood planks to form a stable bench.
Step 3: Finish
After you are done you can use the sandpaper to make it smoother .. if you wish. After that all you need is a cold one to enjoy the fruit of your work.