If you enjoy puzzles, Cell Tower just started Year Two, and I'm thrilled that at least one person still somehow has a perfect streak since day one:
https://www.andrewt.net/puzzles/cell-tower/
and 3Doku launched more recently if you want a mathsier but more challenging beast:
@andrewt Thank you! CT baffled me the first day but I've got the hang of it and enjoy it now. I'm currently at my longest streak of 39, after having forgotten to do it a few times previously. I'm dreading the day when it is all four letter words!