CrossRope is my favorite jump rope. The interchangeable weighted ropes have been amazingly beneficial in my training. The CrossRope is also the rope I used to "master" double-unders and to learn how to do triple-unders.
Oura Ring rosis by far my favorite sleep tracker. This little package packs a ton of tech in a very unassuming ring. If you want to get a handle on your sleep and track metrics to help you improve the quality of your sleep the Ouara Ring is a great place to start.