I live paycheck-to-paycheck. Which means I pretty much need to know on payday exactly what that check needs to cover besides bills.
I utilize the hell out of Google calendar for this.
Wait, google calendar?
Heck yes!
Not only do I have my payday marked but then I have an event called "check eaters" that hits every 2 weeks, on payday, where I keep an ongoing list of what I need.
The bottom of the page is the regular stuff that we are always needing at some point. You know: diapers, toilet paper, shampoo. Even if I don't need it out of the next paycheck, I'll need it out of the one that follows. Or the one after that. Quick skim down the list assures I haven't forgotten something. Nothing worse then doling out the funds just to realize one purchase to late, you forgot something that is otherwise obvious. And usually important. I'm looking at you laundry detergent!
Then the top of the page holds a list of what needs to come out of that exact check.
Sometimes there is even a middle list of the things that will be hitting the pocket book soon, but can technically wait a week. If we have the cash now, might as well, if we don't it can wait.
A possible 4th list is for when a bonus is due to hit, because I get a bonus every 3 months because I rock like that, for the things that are less day to day like clothes for the kids, me, and such. It has also been known to hold present ideas, and costs, for Birthdays and Christmas.
Yes I have a screen shot for you of my actual event that eats my paychecks.
Note, I have costs next to them so that at a quick glance we know what to budget. I note the usual cost as I'm buying them and add a bit extra for cushion. Also, I buy in bulk. 20$ at once for baby wipes gets me more and last me longer than 4$ every damn check. No, I don't really spend that much on Kleenex unless it's cold and flu season. But we do have 5 noses around here. And yes, I do, er, owe the library that much. A certain someone much shorter than me lost a movie for a lengthy period of time before it was tracked down. As you can see, we are working on it. Why am I explaining this to you?
Anyway, this has made life so much easier in knowing what needs bought on payday!