Sounds like that "creative bank account" needs a deposit
Go to a museum or gallery and look at art. Buy a new "art of" book and spend time pouring over the pictures. Make something in a different medium (play-doh sculpture!) Make a flower arrangement. Take a walk in nature and notice light/shadow. Take a nap. Give yourself permission to relax a bit, then doodle. Fill a page with boxes stacked on top of each other, or flowering vines.
I know when I get myself wound up with worry or anxiety, I can't come up with any ideas at all. You're not alone with this problem!