Be overly safe. If you use wood, cover it with foil or something. Even though the wood is generally safe in itself, these warehouses do spray for bugs and such plus, rodents and roaches do roam, so at the least wash/wipe the board good and cover it with foil.
Believe it or not: www.wildorchidquilts.netI bought a ceramic pedestal from them for a wedding cake for $35. That was including shipping. They also have some silver ones. I loved my white ceramic one that I got there.
First Impression Molds makes a silicone mold that you could use to make the strips of pearls that are on the side of the cake. It would be flat on the back side making it easier to attach the strand to the side of the cakes. I love using their molds.