I'm in a similar situation, and I describe it as every day being Saturday. I don't want to waste my Saturday doing nothing, and I have a few obligations, but by and large, my days have no structure.

I end up doing a bit of everything. I garden, cook, play in the garage, ride my motorcycle, go camping etc. Every once in a while, something grabs me and I'm free to pursue it.

A few years ago, I joked that the American dream sucks, and that the Victorian dream is where it's at. I want to have enough free time to be a gentleman scientist, join societies and make art. Now I realise it's not that silly.