What to do with 15k

Hello everyone! I recently got 15k security amount back from my college and am planning to make this amount grow a bit instead of just sitting idol on a normal savings account. Also if it's just sitting there I might spend it. Therefore, I want to ask for advice about what to do with the money. I know its a small amount but let's start with less. Should I go with recurring deposit or invest it somewhere? Please suggest me something. Thank you in advance :) PS: I don't have any demat account as of now but I'm open to all the advice.