I have a small notebook in my bag with a pen, I can use it to note down the item I bought and the price. It is important to list them down and adding them up to know how much I spend. No kidding with the expenses today I don't know how long I can be stay at home mom.
Sending my toddler to kindergarten or daycare at his age now is very costly. It does matter where you live and where the kindergarten located. You may think that the location is not important but if you are planning to send them far, the transportation fee is even higher.
Nothing is perfect, I guess I just have to hang in there and always calculate on what I have spend. Though being a woman I need to pamper myself sometimes.