Gifts.
People gave gifts to each other every day.
Sure, it happened much more often on certain days, such as holidays that involved all the people at once.
It could be some important team or company event where employees congratulate themselves on a new accomplishment and exchange gifts.
Naturally, one of the most frequent variants was someone's birthday or a wedding, for example.
Such events had an exact date and also it was clear to whom gifts were to be given, which often made it easier to find a suitable gift.
But, it should not be forgotten that many people gave gifts to their friends and family on random days, just because they wanted to or were in a good mood.
Some people liked to receive gifts more, it seemed that this is how most people should feel, but in practice, there were a lot of people who preferred to give gifts.