An excellent way to handle seeds or cuttings is to convert a bench section into a propagating case. With boards, partition off an area of bench. Place a section of glass, perhaps a discarded window frame, on top, supported by the framework of wood. Or more simply, tack a piece of translucent plastic along the back of the bench and roll it forward over the area you have seeded. For cuttings, prop up the plastic with clothes pins or wire coat hangers to keep it from touching the plants.