How to DIY a balcony raised bed with old furniture and construction material?

How to DIY a raised bed for a city balcony?

Size would be about 6 ft by 2.5 feet.

I am wondering if there are some affordable ways to build one like using old construction material (pallets?) or an old furniture (desk?) to build the structure. So far I thought of a wooden desk / table with a dresser emptied and lying on top....

The bed doesn't need to be filled all the way to the ground, so ideally it has a storage space (or open space) underneath and the beds only begin with soil from waist height.

Thoughts? Videos? Ideas? Considerations?

Thanks :)