Jars for preserves are available at Lau Choy Seng (just down the road from Sia Huat) in Temple Street.
Sorry I can't help on what fruits to use - I'm not a tropical fruits fan and I think the price and quality of other fruits here doesn't make them very good candidates. My only possible exceptions would be:
- chilli jam or candied chillies
- lime curd
- ginger syrup/ crystallised ginger
Only the first has reasonable life, the others don't keep very long.