Starting a Saving Life With Your Neighbour. Would You Spend Time in the Same Room for Electricity

I’m not really in trouble with money, but I want more money to play with. But it is impossible to increase my income because part-time jobs are prohibited by the school regulations. Then all I can do is to reduce my spending and save money to play more. She is also not in trouble with money either, but she also wants money to play. And thus began the saving life of mine and her. For example, spending time in the same room to save on air-conditioning costs, trying to cook for ourselves, and so on.