These are Minees. They're little cookies which come in small lunchbox-sized packages, ten packages for a dollar, in five different flavors: chocolate with chocolate creme, chocolate with banana creme, chocolate with vanilla creme, vanilla with vanilla creme, and vanilla with strawberry creme. I get them at Dollar Tree; it's one of the Tree's regular items and they're almost always in stock.
I know what you're thinking - Dollar Tree, junky food, probably pretty bad stuff. Sometimes, the knock-off food products at the dollar store really are nasty. Not this time, though. Minees are great - the cookies are fresh and crispy, the filling isn't sticky-sweet, it's just right, and the individual packs encourage limits on snacking - after all, each of the ten packages weighs in at just 1¼ ounces and carries 165 calories. (No, it's not health food, but it ain't bad, either.)
My wife and I both brownbag it for lunch; we work at places where it's really inconvenient to go out at noon. When I tuck a pack of Minees into her kit, it's like handing off a little piece of sunshine, because everyone loves cookies.
Happiness for a dime. It should be so easy all through life.