I’ve just backed something for the first time in ages: The solo hand-held card game “Palm Laboratory” which is a $6 pledge within the campaign for another game:
https://www.kickstarter.com/projects/portaldragon/colab-relaunch
It’s a variant of the 1-2 player Palm Island, and I suspect I’d prefer the theme of the earlier game, but the new one is cheaper as it doesn’t bother with cards for a second player.
I backed it in large part because I like games that I can play on public transport (not that I’m on a lot of that these days), and with these games you hold all of the cards in your hands 100% of the time. It sounds like it’s about a year away, though.