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.
Singapore
This is exactly the sort of thing I like bringing back from Singapore: 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.