Best cheap tablet for children for on a long flight

[nofuse22]

I am taking a 12 hour flight with a 2 and a 4 year old. Any recommendations for a tablet that will play cartoons and films? I only need something for the duration of the trip. I only have macs at home so need to be able to download using a mac.

Many thanks

[nofuse22]

Thanks for all the tips - plumped for the amazon fire

Wish me luck!