non-Amazon videos on Fire HD 6 Kids Edition

[jdwestsr]

I want to load non-Amazon videos on a kindle fire hd 6 kids edition. Is this possible? All of the videos available from Amazon have a viewing time limit. I want to have some vids that are permanent. This is for a handicapped child with no internet access where they live. So some favorite videos and songs that they can enjoy with a tap of an icon would be great.