The Everest Panorama is a short trek in the Everest region, reaching an altitude of about 3800 meters above sea level. It is highly recommended if you plan to visit the Everest region in winter.
The Spirit of Nepal is a mixed-activity tour in the lower altitudes that includes the Capital (Kathmandu), the Tourism Capital (Pokhara), and the Chitwan National Park. It is available in the winter.