Since I use budgeting software, the monthly to yearly totals are always there in my face, so I don't have to "think" about applying this to bills.
But I like to use that way of thinking to illustrate how "small" purchases add up.
Some people, for example, get a coffee every day. "But it's only $2". OK, but would you want to pay $730 a year for bad coffee?
Apply that to smoking, drinking, eating out, etc., and you can see how these optional expenses can destroy your wallet over time.