A voltage detector pen saved me hours last time I had that problem, what tools did you try?

My last bullet journal had grids so crooked I gave up after three pages.

Oh man, that's a solid chunk of change! The visual thing with the jar is so smart, it makes the win feel real. I did the same with takeout lunches and used the cash for a fun weekend trip. Sticking the money in a boring savings account just doesn't hit the same way.