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This idea is practiced on many forums and websites, quite large ones. True, these gifts are usually sent for some holiday. Most often – for the New Year. And not just like that, with wishes for good luck. However, if you really want to, you can do something similar for February 23rd.
And then, it looks a little different.
Yes, people send their addresses to you in private messages, and then you use a randomizer and distribute people according to the shuffled list... but.
Nuances, as always.
Firstly, everyone should receive a gift. That is, absolutely everyone who participated in the event. If, as a result of poor postal service or participants' indifference, someone doesn't receive a gift, then a consolation prize should be sent to them. Only this way, and no other. This responsibility falls on the shoulders of the organizer, as I understand it, you. Are you ready for this?
Secondly, the gifts should not be "in the range of 200-300 rubles." Do you really want to receive... some kind of glamorous magazine, for example? The gifts should be exceptional, original, and preferably made by yourself. And not bought in a store "at face value for two hundred rubles." Or the sender should know the interests of their recipient. But this spoils the essence of the idea. Therefore, you need to think in advance about some kind of common idea of what is desired. For example, let everyone express their preferences. And from them, you need to create some kind of averaged general idea.
Are you ready for such an analysis?
Well, it is quite possible that since there are fans of "Heroes of Might and Magic" here, it would be nice for everyone to receive something related to the game. I don't know... nothing comes to mind at the moment.
Thirdly, this event should be held on really large resources. And HV is, no matter how you look at it, an amateur resource. It doesn't have that many users compared to others, and even fewer are regular users. And in the end, it turns out that "there were people, but it turned out that only 10 people are participating." And the more people on the resource, the less likely it is that something will fall through due to a lot of things, users being busy, etc.
Are you ready for all these nuances? No? Well, that's that.
But if yes, then... the ball is in your court. Let's see if anything comes of it.