A system and method of controlling self powered decorative devices using EMF emanating from, for example, a light string on a Christmas tree. In the preferred embodiment, the cushion comprises a lower body support section made of a plurality of transversely aligned, interconnected air chambers which are filled with air using a supplied pump or the aircraft air ventilation system. The device can be removed from reset in order to integrate. A rack is supported by the pivotable pole, the rack being adapted to support an intravenous bag. Thus, all of the parts of the used engine oil filter can be divided, processed and reused respectively, thereby efficiently achieving the resource recycling purpose, and thereby preventing the used engine oil filter from causing environmental pollution. After a short uptake, the patient is pre-scanned to determine T, S, and R.