1 hour of activity but need longer

I know how to occupy autism non verbal boy time with letter tracing and stickers but I need to occupy time longer - tried drawing which only adds few minutes - colourful drawing he likes. This is for flight to India, need to think about.

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Get him seat by the window so can see everything going by.clouds.countries etc learn some facts and areas so can tell him were flying over X can you see down there.

Something new all the time will keep his brain full!