Croatia
When I think of an easy, crowd-pleasing thing to bring back from Croatia, Bajadera chocolates is a good pick because it does not need much explanation when you hand it over. Look for a boxed version with a decent date on it, especially if you are buying it near the start of the trip rather than at the airport. 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.
Croatia
Fragrant lavender pouches from Dalmatia, useful for wardrobes and drawers.
Croatia
This is exactly the sort of thing I like bringing back from Croatia: small enough to fit in a bag, but specific enough to remind you where you bought it. Oils and vinegars work well when the bottle is small, sealed and wrapped in clothing inside checked luggage. 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.
Croatia
Dalmatian fig jam is worth adding because it feels like something you actually noticed while travelling through Croatia, rather than a generic souvenir. The best version is usually the sealed jar, tin or packet from a normal supermarket, spice stall or food hall, not the most expensive tourist version. The ideal version is modestly priced, not too bulky, and good enough that you would buy it again even without the holiday memory.
Croatia
Cherry liqueur associated with Zadar, used neat or in cocktails.