I'm trying to convince my boys to take lunch to school this year. We picked up an inexpensive lunchbox at Walmart, a "cool" Camelbak kids bottle from Target (which hasn't leaked once!) and I have found some great homemade school lunch ideas online. Hopefully they will think it's fun to take their lunch and have something healthy to eat.
Don't forget a nice note to help keep your little ones going for the rest of the day. Or try the printable Lunchbox Jokes on Kraft Foods Lunchbox Ideas link. If they can't read yet, draw pictures they will understand.