What were the ‘symbols of reverence’ left by members of the team on Everest?

The symbols of reverence left by different members of the team on Everest included a picture of Goddess Durga left by Rawat, a relic of Buddha left by Phu Dorji, across buried under a cairn by Edmund Hillary and a picture of Guru Nanak left by Major H.P.S. Ahluwalia himself.