To be used with WhizLabs. Will be deleted in a couple of weeks.

aws_s3_policy_list_put_but_dont_delete_objects.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "GetBucketsOrListThem",
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:ListAllMyBuckets",
                "s3:GetBucketLocation"
            ],
            "Resource": "*"
        },
        {
            "Sid": "YouCanUploadObjects",
            "Effect": "Allow",
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::YOUR_BUCKET_NAME/*"
        },
        {
            "Sid": "YouCanNotDeleteObjects",
            "Effect": "Allow",
            "Action": [
                "s3:DeleteObjectVersion",
                "s3:DeleteObject"
            ],
            "Resource": "arn:aws:s3:::YOUR_BUCKET_NAME/*"
        }
    ]
}