They may not remember the trip, but they will like going places.
England, France, Belgium, Switzerland, Germany, Vietnam, Mexico, Canada, HI, TX, CO, CA, AZ, NM, KS, OK, WY, SD, NE, IA, MO, AR, MS, LA, AL, TN, KY, IL, IN, WI, MN, MI, NY, PA, OH, VA, FL, MD, DE, NJ, NH, VT, ME, MA, RI, CT, WV, Washington D.C.

Favorite Travel Gear

Samsonite Rolling Duffel Bag
I like this bag because there are handles on the top, and both sides.  It also has wheels, backpack straps and the bottom side is hard plastic.  I can grab the back from any side, I can pull it or carry it on my back.  It is very lightweight and durable. 

This is great for airplanes or cars.  No messy markers or crayons.  Kids can use a coin or anything with a hard edge.

This little plane shaped carryon is great for the kids.  They can pull it or carry it like a backpack.

Munchkin's Disposable Changing Pads
   They are small and lightweight.  This will provide a barrier between your child and the germ cesspool that parades as a public changing table.

Riding carryon.  I haven't tested it on a trip.  I love things that have dual purposes.  

Update:  I thought I would love it, but I don't.  Actually it is difficult to open and close using the locks on the case.  We took in on one trip and that will be the end of that.

These are comfortable and the kids can put these on by themselves.
  I'm on my sixth pair.

Great little ball to take along.  I use it to amuse my kids during plane delays and layovers.  There is always a little corner somewhere for a game of catch or soccer.

EagleCreek Bag. 
Love this bag.  It is lightweight with lots of compartments, dividers and a hanger.  You will run into lots of nasty wet washrooms where you don't want to set your bag down.  This bag can hang on a doorknob, counter edge, or shower rod.  It's washable too.

These individually wrapped wet naps are great.  They are small and lightweight.  They do not dry out.  I use them to wipe down tray tables, armrests, hands, feet, and little cuts.  In Vietnam, I used them to wipe down bowls, cups, spoons, forks, and chopsticks.

Eddie Bauer harness. 
The kids love the animal motifs.  There is a small pocket in the back where my son likes to stow his favorite snack or toy.  I can track my kids in busy places and keep them away from busy streets.

Maclaren Stroller
It folds up nicely and is very light.  This stroller has been on dozens of trips and it is still in good shape.

Ergo Baby Carrier
I can haul a forty pound kid up and down mountains without straining my back.