Crystals shaped into pyramids make great energisers. The shape denotes universal energy being pulled down through the point to the earthly realm. The energy runs around the pyramid, strengthening, until it reaches the bottom. This makes them great to have in a room, improving the energy in the area ,and as a meditative focus point. Put a picture or something that represents a goal you are aiming for under the pyramid so that it can be energised and brought into reality.