Yeah it varies. In my country you only need to participate in the conversation to be allowed to record it.
If your country is part of the EU (aka having to comply with GDPR)? If so, you may be surprised to realise that things have really changed in the last few years. GDPR being only part of the reasons why. It's not the same in every single country, but the shift is happening in favour of the plaintiffs, in the name of privacy, even when the scene was recored or snapped in a public space.
in France (my country) and in Germany it's obvious that this trend is now in favour of the plaintiff when a few years ago its was still in favour of the photographer or videographer.
Nowadays, imho, no photographer/videographer in the EU should take the risk to publish any image of an identifiable person without having the written permission to do so from that very person (and that authorisation should also mention where it will be published and if the person should expect any compensation, and how much it is if there is any to be given). Street photography/videography in the EU is turning or already has depending the country, in a real booby trapped activity no matter if you're doing it as hobbyist and not as a pro.
France, where I live, and Germany and two of those EU-ccountries where I would not take any picture and publish them without a written permission — and I've been doing street photography in France as a hobby for the last 30 years or so. The risk is too real to get into legal troubles. Even in the UK, a country which was alsways more welcoming too street photography (it was clear no one should expect any privacy while in a public space), things have started to shift. Add to that the complexity layer of the many 'not public' or 'not entirely public spaces' mixed within the public space, plus the terrorist or safety considerations, regulations or exception-rules and you get the real mess we're in. It's still much better in the UK, though, but well, like I said street photo is a hobby for me, not something I'm willing to take any risk or worry for (lawyers are expensive and my time is much more precious than money). So, I gave up on street photography almost completely. Instead, I started to... sketch street scenes.
Edit: clarifications.
My spouse and I don't do much gifts and we also ask people around us to not give us anything either, be it for Xmas, birthdays or whatever.
We have been doing that for many years, as a way to 1) reduce the amount of waste we generate and 2) as a way to, well, spend more time with the people we care about, instead of just spending some money on buying them always new stuff — something both my parents were doing with me back when I was a kid, more busy with their own lives than with raising me. I had plenty toys and even money as a kid but not much in terms of a family to spend time with. They regretted it a lot later in life, but t was too late. So, I was very young when I decided I'd rather not do the same mistake they did.
When I do make a gift (it happens :p), I try to favour something that is durable and useful to the person. Edit: if they do not let me know what they want, I will go for:
Books. Comics, fiction, essays, poetry,... they're all great choice.
If they have any interest in making visual arts, I will probably go for a small box of watercolour paints plus some decent watercolor paper (paper is the real important thing in watercolor, way more than anything else), and a brush. I would also chose that for a kid btw (but would pick something more suited to them (some 'real' paint can be very toxic) as I have yet to meet a single child that doesn't like to paint and sketch. Even teens do like that, the moment they stop putting on their usual rebellious act, they too will get a blast of sketching and painting.
Another thing I would consider, even more so if it's for a teen/YA, is a nice journal/diary and a fountain pen with some ink whose color I know they might appreciate — the fountain pen in itself is such a unique writing experience that it may help the person make it into a habit to keep their journal.
As a side note: fountain pens are often associated with expensive luxury brands but there is no need at all to spend money on fancy & expensive stuff to get a very good fountain pen that will last for years. Among my all-time favorites are the Lamy Safari, I have been using some of them for many decades already and they still work perfectly today, and they cost something like 25€. Others are even cheaper (like the Platinum Preppy, around 6€) but maybe they don't look as nice as a Lamy Safari, which may matter for a gift ;)
Edit: typos.