South Africa
I would put Rooibos tea on the list for South Africa because it is the kind of thing that feels useful once you are home, not just another airport purchase. It is a good one because people can try it slowly at home, and it makes a nicer gift than a mug with a place name printed on it. The reason it works is that it gives you a quick reminder of the trip without needing to keep a fragile ornament safe forever.
South Africa
This is exactly the sort of thing I like bringing back from South Africa: small enough to fit in a bag, but specific enough to remind you where you bought it. This is one to research before packing. If the rules are unclear, treat it as an idea to buy from a legal UK importer instead. It is also the kind of thing you can talk about when someone asks what you brought back, because there is usually a little story attached to where you found it.
South Africa
When I think of an easy, crowd-pleasing thing to bring back from South Africa, pinotage wine is a good pick because it does not need much explanation when you hand it over. Wine is a great memory of a meal, but I would wrap it carefully and only carry it when the luggage situation makes sense. I would rate it higher when it is locally made, clearly labelled and easy to use at home, and lower when it is just tourist packaging.
South Africa
Beaded bracelet is worth adding because it feels like something you actually noticed while travelling through South Africa, rather than a generic souvenir. The trick is to choose the simple, well-made version. Small craft items look better on a shelf when they are not too shiny or mass-produced. The ideal version is modestly priced, not too bulky, and good enough that you would buy it again even without the holiday memory.
South Africa
Cream liqueur made with marula fruit, popular as a dessert drink.