I haven't been on a flight that long with a child, but here's my tips for any plane flight with small children:
- iPad if at all possible for kids over the age of 3. DVD players are bulky, batteries die quickly & iPhones are too small. you can pack a lot of great things onto an iPad, not just movies or shows - lots of interactive activities that can keep the older child busy.
- plastic Easter eggs, especially for the little one. fill them with stickers, healthy snacks, toys, etc. - keeps their hands busy, it's "new" every time, it's a mystery every time & they're relatively easy to carry a lot of them onto the plane. Keep snacks & other items packed away for the flight home or better yet, buy things from your travels to pack into the eggs & they'll be a memory maker as well :)
- great idea about the masking tape & I 2nd the silly putty or any other kind of non-greasy/messy manipulative; just be sure to avoid things that can roll off the try as you'll never see it again & have 1 upset kid on your hands :(
- for the baby, it's good if they have their own seat because you can also use the floor space as a "play area" of sort - putting things on his seat while he's on the floor allows him to stand on his feet & get a different point of view.
- car seats; while I think it's a great idea for sleep purposes, they do take a lot to get them onto the plane, get them attached properly & keep an eye on your kids & your stuff; i think it's worth it if you plan on traveling by plane a lot when they're young - then it's kind of like the seatbelt rule: every time you're on a plane it's just like being in a car - you have to buckle into your seat. We only traveled by plane 2 or 3 times a year so I always thought it was easier to just rent a carseat & not have to worry about it.
- head over to a craft store & look for things like pipe cleaners, things to bead, etc. - things that will keep their hands busy.
best advice i can give is to make every effort to STAY CALM & just know that even if that "worst" happens, whatever that is for you, that you have a whole lot of great things to look forward to. That will make it easier on your kids & the other passengers - your own attitude about it. :)
good luck! I'm sure your family will be SO appreciative of your efforts!
vic