I've tried loads of things since getting sober. Not all of them worked out (bell ringing for example, and Boot Camp Fitness). But joining a choir, creative writing group and some small scale sewing projects have worked out well. Plus regular-ish author events at book shops and the odd theatre trip, and catching up with some old friends who I'd neglected for a decade or two has been lovely. I've also volunteered at some community events (Marshalling at running events and the like - nothing massive). When it gets near Christmas I made sure I get to loads and loads of pre-Christmas events so that I still enjoy the season (and actually enjoy it more than I ever did propped up at the bar).
I remember feeling that I'd never be able to fill up my sober time, and then suddenly there doesn't seem to be any time left and I'm always out and about or busy with one thing or another. It does come with time.