I would put Rice or grain pack from Syria on the list for Syria because it is the kind of thing that feels useful once you are home, not just another airport purchase. Grains, pasta and rice are not glamorous, but they are useful, cheap and often taste different from the UK supermarket version. I would look for it in a proper local supermarket, covered market, deli, pharmacy, gift shop or small producer rather than leaving it until the departure gate. Back in the UK, it is worth checking specialist shops first because they often stock a better version than a broad marketplace listing. The reason it works is that it gives you a quick reminder of the trip without needing to keep a fragile ornament safe forever.