Mudra Band

https://www.youtube.com/watch?time_continue=21&v=pnY1QzwFIKE&feature=emb_logo

The band slides over your Apple Watch screen just like a normal band, and instantly turns the watch into a single-handed device. By requiring you to use only the hand that’s wearing the watch, Mudra Band lets you multitask while operating the watch, without blocking the display... More here.

A ridiculous promo video, but I can see some people looking at this because tapping the Apple Watch screen is SO TERRIBLY TIRING!