if i were you id just go to the LFS and get a few small pieces of rock. This after all is better then nothing and not to costly on the wallet. agreed that anemones are not needed in the tank but the really do make great additions into your tanks. One thing that was not mentioned about them is they require relatively strong lighting. This means you would need to buy a new light setup for the tank, which can get up there in price depending on what you go for. another side note about rock, is that adding some live rock, your sand will become "live" quicker so you get a few benefits out of one lol.
hope all goes well in the tank and I'm looking forward to pics.
hope all goes well in the tank and I'm looking forward to pics.