The Ooler Sleep System is a mattress pad that heats or cools your bed with water than runs through it and can be set to the desired temperature right from your iOS or Android phone.
The Anker Nebula Soundbar Fire TV Edition is an easy recommendation. The smart features combined with the built-in streaming and ease of use make it one of the best options in its price range.
There are plenty of vessels for liquid that will keep them hot. Yeti is one popular brand. The Cauldryn Coffee Edition is essentially a Yeti on steroids.