There appears to be a healthy skepticism about such things in Orthodoxy. A priest told me that such things can happen, are gifts from God, very rare, and we should not seek after them or give them much credence. They are just as likely to be delusions or distractions.
Very true. I have heard of enough or read about a number of such things. I also agree it is not commonplace.
Would miracle working icons, etc., also fall into this or an entirely different category?
They, too, do not *add* to "the faith".
Consider this from chapter 20 of the Gospel of St. John:
" So the other disciples told him, "We have seen the Lord." But he said to them, "Unless I see in his hands the print of the nails, and place my finger in the mark of the nails, and place my hand in his side, I will not believe."
Eight days later, his disciples were again in the house, and Thomas was with them. The doors were shut, but Jesus came and stood among them, and said, "Peace be with you."
 Then he said to Thomas, "Put your finger here, and see my hands; and put out your hand, and place it in my side; do not be faithless, but believing."
 Thomas answered him, "My Lord and my God!"
 Jesus said to him, "Have you believed because you have seen me? Blessed are those who have not seen and yet believe."
Does our Christian faith demand of us that we believe because we have seen apparitions, visions, miracles? I don't think so.