Walks to think.
A girlfriend who likes to bowl, ride horses, garden, hike, visit family, ...
And another girlfriend who likes to ballroom dance (all three of us take lessons together), among other things, and has two fun kids.
Organizing and improving my living environment always puts me in a good mood, even if its small things.
And travel.
I grew up without TV because my dad is unusual. I get bored if my brain isn't fully engaged.
Cultivate an awareness of how bored you really are when you death scroll. You are bored, and alleviating it by gambling on finding the next valuable page to read. It is the gambling aspect that makes it so psychologically sticky. Learn to abhor that disease!
EDIT: I also do a lot of amateur mathematics, formalizing things that seem like they need it, and diving into geometric algebra and other neat topics. That can super engage my brain at all hours, walking, driving, etc.
And like nature, I am changed by dealing with an aspect of reality I cannot control, but can continually explore and learn from.