Although I am not a single mom with kids, I am a single guy. I was just poking around and I came across your post. I hope my three ideas will help or at least give you a new perspective. This ended up a lot longer than I thought it was going to be.
1) The first trick I used (and don't recall where I got it from), was that every $5 I got I tucked away into a separate part of my wallet. Each day, when I got home, I put the $5 in a container. It sounds easy at first, then once you start, it becomes VERY VERY HARD. The crazy part is, once you get used to it, your going to find you end up saving a crazy amount you never thought you could... and end up asking for change in specific bills, LOL (^_^). Once, I walked around with $16 and change in dollar bills and coins in my work bag. Never did it again tho, it ended up that I would rather tuck that $5 away, than clink like a coin purse, and the weight was annoying.
2) Even before the $5 experiment, I never like carrying around change. Jeans only have so many pockets. Most of my change ends up in a huge coke bottle money jar. That gets heavy, and needs to be sorted, and takes forever. So I took a washed 32oz Powerade bottle and started sorting my change. Its been a few years since I've done it (using my CC since it gives me points nowdays), but iirc, the bottle of quarters came out to near $256. Just be very very careful when you take it into your bank. Their sorting machine ended up saying $249, I think. The numbers came out so obscure I haven't been back. I do recall when I asked for proof, they said that it had previous coins, so they could't account for it. Painful lesson learned, and hence why I use my CC also.
3) You mentioned its hard for you to use generic store products. I used to be the same, but I read a Consumer Reports article on Brand vs Generic/Store Brand recently. I was hesitant and skeptical at first. But every time I go to the store now, I try to pick up a Generic/Store brand also. Before buying, I make sure the ingredients on each are exactly the same, and I try to avoid the stuff I can't pronounce or don't want, ie. Aspartame for example. So far:
Skippy Natural Creamy vs Great Value (
Walmart) Natural Creamy. Peanut Butter. Surprisingly (trust me, HUGE surprise), the Great Value actually tasted better. This was an easy one, I just opened both and took a small spoonful. I made sure to rinse with water between.
Market Pantry vs Campbell's. Cream of Mushroom. Out of the can, the Campbell's one was better. It had a more creamy flavor. I used both for my swiss steak, but will go back to using Campbell's. And the reason is because my nephew and niece's can use the Labels for Education.
Market Pantry vs Dole. Cut Green Beans and Yellow Corn. I couldn't tell the difference. It's corn and beans in water, and butter makes everything taste better.
Did some searching and here is the online version of the article. Hope this helps everyone who has trouble with Generics. It's strange at first, but savings is savings in my account balance.
Ref:
http://www.consumerreports.org/cro/magazine/2013/10/best-store-brands/index.htm