The trick with coupons is to save all of them and use multiple of them when your needed item goes on sale. For instance, tonight I will be purchasing Toaster Strudels (which my girls LOVE.) They are buy one/get one free this week. So if I have a coupon for $0.35 off of 1 and I have 2 or more of those coupons I get each box for about a quarter. That is a fraction of their normal price.
The other trick is stocking up now for what you might need later. I do this mostly with big items like toilet paper, paper towels, toothpaste, etc. This helps keeps their prices to the lowest possible. I purchase as many boxes or containers necessary to keep us 'stocked' until the next time that product goes to its lowest price.
Couponing is really a game. I've even been able to get my husband in on the game. He loves seeing the savings. Unfortunately, I have gotten terribly behind in my coupon clipping and organizing. However, tonight I am spending time getting that caught back up. I have a hard time going to a store knowing I can save more then what I did or knowing I could have paid 75% less for an item if I had just taken the time to find the correct coupon.
So I am thankful that companies provide coupons and that stores accept the coupons and multiple coupons. Those coupons have been a HUGE help on our family's grocery budget. I expect as my children get older (especially with a boy in the house) I think the blessing of coupons will become more readily evident.
I hope you take the time to go over to the Garden of Learning and hear what others are thankful for too.