No. Coptic monks do not drink any alcohol nor could it be used as sacramental wine for the divine liturgy since it is a distilled spirit. So while the gesture would be appreciated, it would be a wasted gift.
I know in my parents and grandparents day they would take different foodstuffs, namely fresh fruits and other items the monasteries did not grow or produce, also they would bring their first fruit offerings to the monasteries. But this practice while still practiced is not as common nor really necessary in the most monasteries outside of Egypt. More commonly in the modern day, we mostly leave small monetary donation (or if know the monastery is in particular need of something, that item) or if we could render a service for the monastery, such as construction/manual labor/landscaping et c..