Where to park 2.5 Lakh

Hi all, Please suggest where I can park extra Rs 2.5 lakh. Right now it's in my bank account (with 2.75 interest pa)

I don't want to create Fixed deposit. Dont even ask me why 😂 I'm weird. I might buy something expensive in future and I want the money to be there for use.

Should I park it in Nippon overnight fund? I understand that I will have to pay tax plus expense ratio for that. Should I just keep the it in my account.