I admit it: I'm a Happy Meal buyer too. I can't even pretend it's for DD anymore since she's as big as I am now!
And, yes, I keep the toys. Hey, if she's too cool to order a Happy Meal then she's too cool to play with my toy. Even at home in her room with the shades drawn.
Now I could eat a full-size meal, no problem, but since I've hit 40 I need to start downsizing my meals before my body upsizes!