yes there is a plushie, but it was on the marketplace quite recently. other than that there is a tomb stone as well. just keep an eye out until they are available again!
You can only use the Hallowtide Tombstone or the Naptime Yata Plushie, either/or not both. The Dreamy Plushie Table allows for a faster sleep time. Also take your previous sleep items and use that with the new ones to image item overtop of the completely ugly set. The one thing we are missing is the actual sleep hat from retail that matches the Lulaby set (Sheep Sleep Hat). Also the vertical coffin that is purple.