What should I do with the remaining money?

I bought Netflix today for 15 euro and bought the standard package because it cost 11,99 euro. I actually wanted to buy the Premium Packet but it costs 15,99 euro. My question is what should I do now with the 3 euro?

Summer holidays is the time when everyone realizes that teachers are hopelessly underpaid.

Quite crazy idea, but use at the next extension?

Or if you have it in cash: on the daily allowance with it

First in the game… Book of Ra. Easy money, 2,000, - € per day!