Find a planter or outdoor yard fountain with an urn shape, preferably with a wide opening at the top of the urn. Total height of the planter should be approximately 1 meter. You may be able to buy an inexpensive one at a yard sale or auction.
Invert the planter or fountain so that it is upside down, with the widest part now functioning as the base. This gives your pedestal table better stability.
Settle the half barrel on top of the planter so that the sides hang down toward the ground. If they appear too long, you can trim them as desired.
Attach the barrel to the stand with wood glue. Weight the top of the table with books, tools or other heavy objects as the glue dries. Reinforce the attachment with four nails hammered through the top of the barrel and into the pedestal. Space the nails equally for the greatest stability.
Paint or stain the half barrel. Because the wood is porous, you will need to seal it before painting or plan several coats of stain, since the wood will absorb it. Finish with a spray veneer.