Familiarize yourself with Practicing the Five Powers Near the Time of Death.
The following is information from Rinpoche about the materials that you have received.
Small bag with precious pill powder: This is a very, very special pill crushed into powder. Take a little each day. It contains thousands of special relics and blessed pills.
Chung nga: These are pills for naga harm, which is a condition for cancer. Take five pills each day.
Namgyalma protection: Wear this around your neck at all times. Try not to sleep against the mantra and take it off when you bathe. When you sleep, just keep it beside you on bedside table.
Prayer wheel to be worn around neck: The prayer wheel contains millions of mantras. You may turn it from time to time. Take it off when you sleep and also when bathing. Whoever is looking after you at the time of death can place the prayer wheel to the crown of your head.
Colored protection square: You can wear this around your neck. Use the string from the mani pills to tie it around your neck. Do not sleep against it, and take off when you bathe.
Mani pills: These are blessed by His Holiness the Dalai Lama and thousands of monks. Take a few of these each day.
Packet of pills: Contains Guru Rinpoche pills that came from the Maratika cave in Nepal where Guru Rinpoche achieved immorality. Take one pill each day
If you are taking strong Western medicine, take all the various precious and blessed pills at a different time. That means not at the same time as the Western medicine.
Prayer wheel visualization: When turning the prayer wheel, visualize brilliant light coming from the prayer wheel, which is the holy mind of Chenrezig, the Compassion Buddha. Concentrate on that light purifying the cancer, the naga harm which is the condition for cancer, and the negative karma. After turning the prayer wheel for a while, visualize and feel strongly that the naga harm and cancer is completely purified. Then, visualize light coming from the prayer wheel to all sentient beings, purifying them of all naga harm, cancer and other sicknesses.