I think the recent insurance style savings plans are good for your purpose. These include Singlife, Gigantiq and Dash EasyEarn among others. Such plans are quite liquid and most give returns around 1.6-2.0% which should be better than most fixed deposits on the market at the moment. Do note however that a portion of the returns tend to be not guaranteed returns and as such do consider that when making your final decision.
To add on to what Chris has mentioned, do note that it is currently not possible to open a new Singlife account as they have closed account openings - you will be put on a waiting list.
If you want to open an account immediately, you can consider Dash EasyEarn or GIGANTIQ. They currently both offer 1.8% interest p.a. for the 1st year.
Dash EasyEarn guarantees 1.5% interest while GIGANTIQ only guarantees 1% interest. However, GIGANTIQ only requires a balance of $50 while EasyEarn requires $2000. Visit their site for more info: https://www.tiq.com.sg/faqs/gigantiq/#faqContent
Hope this helps!
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