This might sound radical, but I've always thought it would make sense to bring back some of the programs from the New Deal as part of UBI. In the US and Canada, infrastructure is crumbling. As part of your UBI (if you can't or choose not to work) maybe people should spend a week a month working for the good of their society. It's not perfect but if there is a job skills/training component of these things, and exposure to people of all types it would be good for a lot of people.
I've been 100% on board with this kind of thing. Help people who lack a sense of purpose to contribute towards maintaining the things that make their lives better. Infrastructure is exactly the kind of area that needs bodies thrown at it (under skilled supervision, of course)