Need an advice: where to invest some cash that I will probably need in 1,5 years

Hi all,

I have some cash sitting in my bank account that gives 2% / year. I would like to invest at least part of it (inflation etc.) knowing that I will probably need it back in 1,5 years. What would you suggest?
I live in a country where there are no taxes on capital gains, which I would of course prefer if possible.

Thank you in advance