I've taken the opposite approach a lot of times. So instead of asking what you can add you might want to look at what apps / bookmarks that you can remove. Do you need a link to the reddit frontpage, or can you narrow it down to one or two specific subreddits that you want to check, or maybe remove it entirely if it does not add much value to your daily life.
Apps that I would recommend however are many of the apps that tries to gamify physical activity. I use Garmin, but I am not sure if the app works without owning the accompanying smart watches and there are plenty of alternatives, and the gamification and accountability that it offers around physical activity makes it a lot easier to get out of the door (which is always the hard part). Physical activity has long been known to have a huge positive effect on mental capacity and health so well worth spending an hour or so every day on.
Apps that I would recommend however are many of the apps that tries to gamify physical activity. I use Garmin, but I am not sure if the app works without owning the accompanying smart watches and there are plenty of alternatives, and the gamification and accountability that it offers around physical activity makes it a lot easier to get out of the door (which is always the hard part). Physical activity has long been known to have a huge positive effect on mental capacity and health so well worth spending an hour or so every day on.