Use a belt sander to sand and smooth the top of a large slab of wood. You will use the slab to place on top of your tree stump for your table. Chris Lubkemann, woodworker and author of "Tree Craft: 35 Rustic Wood Projects That Bring the Outdoors In," suggests leaving the chainsaw cuts in the wood slab when sanding it down. The cuts add to the overall look of the slab.
Place the sanded slab on top of your stump for support. Use wood shims to keep your slab tabletop level. Wood shims look like small pieces of wood cut into wedges. Slide the wedge in areas where your slab tabletop is unsteady to make it even.
Stain the slab with wood stain in the color of your choice. Keep in mind that the color stain you choose will change from its original color when it mixes the color of your wood slab, but it will darken as time goes by.
Cover your tree stump table with plastic if you decide to leave it outdoors. The plastic covering prevents the elements from damaging the wood, so your table can last.