Here's Deborah's tip for maintaining peace while on the go with her toddler:
About once a week, I prepare several "goody bags" for my 2.5-year-old daughter. Usually this is a ziploc or an envelope containing a sheet of paper, a few stickers, a crayon, maybe a page from a children's catalog. When I get free address labels from charities, I put those into the goody bags. I stash the goody bags in my diaper bag and dole them out whenever needed: at restaurants, in shopping carts, in the back of the car. It always keeps her happy for at least a few minutes.