I would use my hands and pick up what I wanted to move and carry it to the new tank. :P

I have always had good luck moving livestock from tank to tank. I do my best to keep all of my tanks at the same parameters so moving things aroud is easy. If you have a difference in temperature, salinity or other then you can treat the move like any purchase from your LFS. Use a bag and go through normal acclimation. When setting up a new tank I always try to move as much rock, sand and water from an established tank to help kickstart the new tank.