This is the start of the last weekend before school starts. Do what you have to do to make sure your kids have what they need to be cool next week. Your son will need...
New Clothes - Wash them though. Get rid of that new clothes feel. Printed tee and jean shorts is all you need to make a neutrally cool splash. Or go with a cool theme like the Minions, or Star Wars, or Angry Birds etc.
Backpack - Lots of great themes to suit any child. Star Wars for Tommy. They're a style statement though. Don't send him with last year's backpack or underestimate it's cosmetic as well as functional purpose.
Lunch Pail - Find one that matches the backpack if they aren't together.
Thermos - Same as above.
New kicks, styling as you can find. Nike. Vans. Converse. You never get a second chance to make a first impression. If it were you, you'd want to look cool, so choose shoes wisely.
Oh yeah, then you have all the other stuff that you need for school, like pencils, paper, fancy stationary, and food containers. That stuff is probably important too, but nowhere near as cool or #thugdaddy blog worthy.
That's the best thing they can have on their first day of school.