We are considering this feature as a premium Widget in Yodeck. As soon as we have feedback, we will update this suggestion.
Currently, we have no way to know that what the users has specified can indeed be fitted on the SD card storage. Providing an easy way to add tens or hundreds of YouTube videos, would probably cause issues. But we are looking into it and we will probably provide this in the near future.
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or add a single youtube playlist that can be displayed fullscreen in a widget