Hi
Pls check the straits times classifieds as there are lot of oppurtunities for working from home .
You can try with healthcare industries too, as they have this system of calling the patients for feedbacks, appointments etc. They pay by number of call basis.
Other than that , if you are interested in teaching you can take home tuition for kids.Check with the nearest community clubs, recreation clubs near your block if you live in HDB flats.
You also can call SINDA and check with them.
Hope the above tips are useful.
Cheers
Vijee