I've got to get back to my guitars, too. Like you. Blue, I have an acoustic and an electric. It has been so long now... I will need to start over. I do best with those if I see a teacher in person, although I get some help from some online people, too.

Do you like animals? My friend loves dogs, but is not in a position to have one of her own right now. She volunteers at a local shelter and has to be there by 8 am to walk a dog and loves it. SHe will often stay and walk yet another. Lol. Unsure if this is your cup of tea, but thought I would mention this.

I know I get more motivated and feel much better about myself if I can find a way to get involved in something I truly believe in, some kind of a cause or similar. I find those types of activities both very fulfilling and entertaining!

And there is always the gym!

My schedule is quite full in the mornings since my mom lives with me right now. I get up and get breakfast ready. We read the paper, etc.
I miss getting up and getting busy and hope to change this routine soon. I know she will feel disappointed, but the morning is my best time to tackle tasks!

There are food shelves where you might offer some time/energy? Some around here also put on meals each week and people volunteer to help to cook the meals. You are a great cook!

You might try meetups? We have some here in the mornings, just women of all ages meeting various places to walk, etc; If the weather is bad, they meet in a local mall.
Lots of other activities, maybe even a guitar group? In this area, we have meetup groups going morning, noon and night! Maybe there is a group who love/explore electronics more and you might find common interests in your hobbies like these?

What really interests you? what excites you?
I have been wanting to learn to paint. A neighbor teaches watercolors and when she starts a new class , I hope to join in!

I hope you will find some very rewarding activities which help your life to feel as fulfilling as possible!