I have been using circular wooden disks, laser cut with various designs as the base for pine needle bowls. Most of the designs allow for attaching the pine needle coils directly to the edge of the disk. Some require that I drill a small hole around the edge of the circle. I coil around the base until I reach the desired diameter for the bowl, then I bring up the sides of the bowls for a several rows. I have been using dyed pine needles for the bowl and natural pine needles for the final finishing row of the bowl to tie to the wood color of the base.