Trying to find a nice gift for friend's family

Hi everyone,

I've been over in Sri Lanka working for a few months, and I'm heading home to the UK in a couple of weeks. During my time here, I've been staying with a friend and her parents. They have been so kind and generous. They've made me feel safe and welcomed in a country very different to my own. They have provided me with my own room, bathroom and cooked meals. I really want to show them my appreciation by getting them a gift and a thank you card before I leave.

The issue is that I'm not really sure what to get them. If I were staying with someone in the UK, I would probably get them a bottle of their favourite drink like whiskey etc. My friend's parents don't drink and are retired, so I don't think it would be appropriate. My other thought was maybe some nice chocolates, but that doesn't feel like it's enough? I also think it would be hard to hide chocolates in my room in this heat until it's time to gift them.

What would be a suitable gift? I appreciate any suggestions!

I've had such a lovely time here. One stereotype of Sri Lankan people I heard was that you're all very friendly and wow is that true. I hope to come back again someday.