When those special occasions come along that require a centerpiece, resist the temptation to run to the store to purchase any old thing. Making a centerpiece at home costs less and puts you in control of creating something exactly as you had pictured. A topiary centerpiece is a change of pace from the typical centerpieces and requires little expertise, making it simple, even if you're a beginning crafter.
Select a 6-inch diameter urn-shaped pot for the topiary centerpiece. You can use a larger or smaller pot, depending on the size of the table.
Push the floral foam cone into the pot so it fits snugly, with most of the cone above the pot. Use a floral foam cone that's approximately the same size as the pot.
Hot glue unshelled nuts, such as walnuts or almonds, over the foam cone to completely cover it. Place the nuts close together, leaving as little a gap as possible.
Fill in any gaps by gluing on moss or ivy leaves between the nuts so the cone is completely covered. Set the topiary centerpiece on the table.