I don't want to use data pipeline because it is a cumbersome pita. I also have a relatively small table so it would be heavy handed to use data pipeline for it- I could run a script locally to do the import because its so small.

I used the fully managed export to s3 feature to export a table to a bucket (in a different account):

This is the closest you can get to a "managed feature" where you select the S3 prefix and the DynamoDB table.