Always love knowing about other people's traditions and how they came about being a tradition. My sister and I have a tradition that randomly happened one year and it's stuck with us until this day and we're now 26 and 27!
For context, one year my sister and I woke up around 4am and there was a note on the back of the toilet saying wake us up if Santa has been, now in our defence this didn't say wait until an appropriate time so we woke our parents up at 4am and got told to go back to bed. Obviously fairly young, too exicted to sleep we decided to open our stockings together on the top bunk of our bed. In the stockings were a carton of Heroes chocolates and I got hungry so I started to open and eat them, and then we woke our parents up again at 7am. So from that year on, we've woken up around 6am, opened our stocking presents and then woke our parents up around 7 to go downstairs to open our presents - after the first year 'Santa' started putting a can of pop and a packet of crisps in our stockings so we could eat/drink if we got hungry instead of devouring chocolate at 4am .