I expose myself to the creative works of others. Reading, museums [art, history, armories, scientific//technological...], talking with or listening to others about their hobbies [building arcade machines, older cars...], going to conventions where I shall encounter cosplay [and I bring my camera and subsequently ask permission to click], and like this.
I myself create, be it a dribble-out or starburst of output depending on the tides. I went through a lamp phase two years ago; last year, I went through a clock phase; 3-4 years ago I went through a sculpture // 3D-scenery type phase. I tend to do this by coming across debris and considering how I can turn that into something I wouldn't want to throw away. Probably a hand-me-down from my Depression Era grandparents, but I'll take it.
I make effort to keep my imagination alive, even if on only life support. Many years ago I started writing short stories to put threads in my head out onto paper. I'm not very good, and my genres have shifted as they are want to do, but I do it. Certain circles think me a writer more than anything else, which I can't blame them for, but I know better yet still do it.
I've been in and out of photography over the decades [sweet jesus, I'm halfway through my life already], and am currently in and In Phase [in part thanks to my current job where by day I take pictures for money and by night I take pictures for myself]. I find myself in a place, oh hey this is a cool angle, click. I see something different or mundane, click. I turn to the right and see something cinematically cliche but pix or it didn't happen and it's lost like tears in rain, click. I then go to my extortion-priced URL and upload what's not the worst.
I explore. This might port into your "curiosity" angle, e.g. "I've not been down this side street" or "I've always wondered what this empty courtyard was about". "Say 'yes' to Life" as a certain recent sequel proclaimed. Repeat until dead.
I remind myself that I have no excuse to be bored. I then allow myself to be bored and do boring things.
You mention Risk. Sure, there can be risk. But how big does something have to be in order to register as Creative? The things I create, make, build, your thesaurus here... I die and nobody but the guy cleaning out the overpriced apartment will care. I was still creative, and it didn't matter to The World. You know what did matter? How my creativity rippled through the rest of my life -- e.g. into my work, my relationships, my enjoyment of life, and so forth.
TLDR: I keep the fire alive via various avenues I find fits my life and personality.