There are plenty of investment portfolio you can follow out there currently in the market.
From the lowest, there are all kinds of structured/time deposits account via bank that can give you up to 1.6% interest.
Next up you can look at Singapore Savings Bond, which has a cap of $100k with a step up interest every year starting from 0.xx%.
Followed by you can look at Pure Endowment Products that does not have any insurance tied to it, there are some that are really good out there.
You can even consider ETFs such as STI ETF or Nikko AM ETF for local market exposure.
You can also consider Unit Trusts (UT) which can generate from 3%+ to 10%, depending on your risk appetite.
I have a broad range of investment tools that I can recommend you, however I shall not post it here as per forum rules and regulations.