LCD Keychain Games for kids for long flight...

We have a long 9hour+ flight this xmas with the kids 2 and 6 year old.
As well as the usual I wanted to get then some games to play.

I thought of PACMAN and other games on a mobile, but these only work with a SIM card installed, which I don't think is allowed on a flight!

Laptop is a bit of a handful and a PSP is a bit costly to replace when it get dunked in a drink.

My wife found a set of 3 LCD games at Argos 372/5533 for £7.99 for 3 games Pinball, Dinosaur and Racing. But they do not sell this any more. Tried the local 99p shop but they have sold out to make room for the Xmas stuff.

Are there simillar games that anyone could recommend?

Ideally not violent / guns etc.

Thanks.

Any thoughts advice welcome.