Usually I just have to look at my fingernails to know how much money I have.
I've been doing massage therapy as a support job for almost five years now. As a therapist, I have to keep my fingernails pretty short so I don't end up incorporating accidental acupuncture into my massage sessions. So I generally trim them or file them down every couple of days, or even every other day if I'm working a lot.
That also means I have a built in warning system when my funds are about to dip. If I notice my fingernails getting a little long, it means I haven't worked much lately and I haven't had that built-in reminder to trim them.
But now that I'm about to start school, it just occurred to me that I can do whatever I want with my fingernails! I could grow them or paint them or... well, I guess those are the two main things I could do. They're just fingernails after all. But still!
And I might. I might try growing them out to a nice girly length and painting them a nice girly color.
I guess I'll also have to start checking my bank balance at the ATM like a normal person.