I have loads of fond memories of all the many traditions we had:
Half birthdays (my brother was born at Christmas) We still celebrate them now!
St Martins Day walking around the local area singing with a candle in a paper lantern when it got dark
On Halloween making toads eyes sweets and setting up a witches den, apple bobbing, carving a mound of flour etc
Guy Fawkes night baking parkin and having fireworks, indoor ones if it was raining (actually I don't agree with 'garden' fireworks these days but it was special for me at the time.)
German traditions at Christmas. Us kids were all born in Germany so brought the best traditions over with us (St Nicolas coming on the 6th, traditional wooden tree decs and a weihnachtspyramide, lots of candles, singing around the tree, German baking, traditional picture calendars etc) as well as celebrating on Christmas Day
Traditional German Easter too, with Easter baskets full of special little presents outside each bedroom door and chocolate eggs hidden by the Osterhase. We'd paint eggs and grow cress heads and dye hard boiled eggs and bake chocolate nests, all that stuff too. In the afternoons we'd have an outdoor chocolate egg hunt organised by our parents too, with a list so as to make it fair.
A goodybag of surprises handed to each of us when we were half way on our journey going on holiday
Hiring a boat and going out for the day as a family on holiday
Spending time together on the beach
Teddy bears picnics in the garden in summer, with teddy bear shaped ham and cheese, pom bear crisps etc
Family bike rides at the weekend
Saturday nights. During the week we ate earlier but on Saturdays we'd get dressed up and stay up late and eat a fancy meal all together with candles and music
Playing together. With a huge playroom and garden, mountains of good quality toys and a brother and a sister it didn't matter that we didn't have TV!
All those things felt really magical even if they sound ordinary reading them out. I guess what really shines for me was all the extra things my mum did, despite being chronically ill. All the effort she went to really showed how much she loved us.