Years ago, I would look at the "total savings" at the bottom of my receipt and then set it aside for vacation extras. Not any more.
Matching the sales with coupons and stockpiling the items that I use often is pretty much how I shop. I rarely buy anything that isn't on sale, so those coupon "savings" aren't really saving, in my book. I now look at it as what I pay for the items that I buy. My philosophy is that it's not about what I "save", it's about how little I spend. For instance, the shelf price for a box of Kellogg's Raisin Bran is $3.19. When it's on sale, it can be as little as $1.88 and with a coupon, I can snag that box for 88¢. Since I would stock up on enough Raisin Bran to last us until the next sale, my price point for Raisin Bran is not $3.19. It's 88¢.
I prefer to just make weekly deposits to a regular savings account that has been designated for travel. It works better for us because it's not subject to sale cycles or additional spending for holidays or parties we host.