We (Greek tradition) celebrate them like birthdays - cake and presents for the kids, and greetings from family and friends.
...
Most of the customs revolve around giving to others - once we're no longer children, it's more about us giving to others rather than being given gifts. Traditionally the custom is to give to the poor, which often works out to hosting a feast or at least bringing food to Church for everyone to share. Another common tradition is to bring the bread and wine for an artoklasia, which I forget the russian name for. Litya? The five loaves of bread blessed by the priest, generally at Vespers. I am determined to make the loaves one year, but I've always been too sick to do so! One day.
A non-Church related custom is that if it's your nameday and you're drinking with friends, you pay, since that's giving to the poor...
My thing is flowers - I don't have the energy to bake, or a lot of money, but I always bring flowers for St Kyriaki and the Church. I don't know if she likes gerbera daisies but I do, so that's what I bring! This year I went to a flower farm about 15 minutes from where I live and asked them to make me up some arrangements, so I have a big one for Church and a smaller one for our living room icon corner table (yes, my protestant family has an icon corner, and my Mum's actually quite proud of it!) They do beautiful arrangements, and I did three kinds of flowers this year and they added greenery. Gerberas (joy and purity), lilies (purity and spiritual maturity) and purple asters (pure love and patient endurance), which seemed perfect for a virgin great martyr. Here's pictures, because I can't resist - today's my nameday (7th of July):
...