Some of the other answers recommended peer-to-peer lending and property markets. I would not invest in either of these. Firstly, peer-to-peer lending is not a traditional investment and we may not have enough historical data for the risk-to-return ratio. Secondly, property investments have a great risk unless you diversify, which requires a huge portfolio. Crowd-funding for one property is not a traditional investment, and may have drawbacks. For example, what if you disagree with other crowd-funders about the required repairs for the property?
If you invest in the property market, I recommend a well-diversified fund that owns many properties. Beware of high debt leverage used to enhance returns (and, at the same time, risk) and high fees when selecting a fund. However, traditionally it has been a better choice to invest in stocks than to invest in property market. Beware of anyone who says that the property market is "too good to not get into" without specifying which part of the world is meant. Note also that many companies invest in properties, so if you invest only in a well-diversified stock index fund, you may already have property investments in your portfolio!
However, in your case I would keep the money in risk-free assets, i.e. bank savings or a genuine low-cost money market fund (i.e. one that doesn't invest in corporate debt or in variable-rate loans which have short duration but long maturity). The reason is that you're going to be unemployed soon, and thus, you may need the money soon. If you have an investment horizon of, say, 10 years, then I would throw stocks into the mix, and if you're saving for retirement, then I would go all in to stocks.
In the part of the world where I live in, money market funds generally have better return than bank savings, and better diversification too. However, your 2.8% interest sounds rather high (the money market fund I have in the past invested in currently yields at 0.02%, but then again I live in the eurozone), so be sure to get estimates for the yields of different risk-free assets.
So, my advice for investing is simple: risk-free assets for short time horizon, a mixture of stocks and risk-free assets for medium time horizon, and only stocks for long time horizon.
In any case, you need a small emergency fund, too, which you should consider a thing separate from your investments. My emergency fund is 20 000 EUR. Your 50 000 AUD is bit more than 30 000 EUR, so you don't really have that much money to invest, only a bit more than a reasonably sized emergency fund. But then again, I live in rental property, so my expenses are probably higher than yours. If you can foresee a very long time horizon for part of your investment, you could perhaps invest 50% of your money to stocks (preference being a geographically diversified index fund or a number of index funds), but I wouldn't invest more because of the need for an emergency fund.