Buy a musical instrument and learn to play it, don't have to be amazing at it just make sounds and have fun. I can get sit for hours playing along to records. I now buy a new instrument every couple of years. Last year was year of the clarinet, this year is year of the zither. You can get lots of second hand instruments on ebay for the price of a playstation game, look after them and they will last a lifetime or more.
Read books. Any books. Find a local library and its free! (I use my old university library). I find I get absorbed into topics and these seem to direct my work. You think about something and then you start to see it more and more, you meet people who are also interested in those things and decided to work together, you find community you can contribute to.