If you visit the shops in Dafni just before leaving Athos one is tempted to buy all kinds of souvenirs, but what I like best is the products that were grown from the land that you just visited. So I did not only buy some bottles of wine from Mount Athos, but also herbs (timian and oregani), and olive oil and honey.
The honey comes from a kellion called Marouda and the (excellent!) olive oil from Prof. Eliou.

Marouda honey

Prof. Eliou olive oil

Wim Voogd, 9/11