If you spend time looking for a wrist rest for your MacBook, you'll find plenty of options. Foam pads, silicone wedges, memory foam rolls, full-length keyboard mats. Most of them will make your typing more comfortable. None of them were designed with a watch on your wrist.
That distinction matters more than it sounds.
The Problem with Standard Wrist Rests
A standard wrist rest sits in front of your keyboard and cushions the soft part of your wrist. It works well if your wrist is the only thing making contact with your laptop. But if you wear a watch, especially a metal one, the back of the case and the clasp don't rest on the pad. They rest directly on the palm rest area of your MacBook, right where the aluminum is thinnest and most exposed.
That's where the scratching happens. Not from your skin, but from the metal that never leaves your wrist.
The same is true for bracelets, bangles, etc. Any metal that hangs below your wrist line will eventually find the edge of your laptop. A long typing session becomes a slow grind against a surface that doesn't forgive. Standard wrist rests don't address this. They're designed for comfort, not for the specific geometry of a watch crown or a clasp riding along the MacBook's edge.
What You Actually Need
The right setup for a watch wearer isn't a full wrist rest running across the front of your keyboard. It's protection placed precisely where your watch makes contact: the palm rest, the edges, and the corners of your MacBook where metal meets aluminum.
You need something thin enough to stay out of the way, soft enough to prevent scratching in both directions (your watch and your laptop), and durable enough to last through daily use without peeling or shifting.
Most wrist rests solve the comfort problem. This is a different problem.
WatchPads: Built for This Specifically
WatchPads are adhesive pads made in the USA from Ultrasuede, a premium material that's soft enough to protect both a watch case and a MacBook finish. They attach to the palm rest area of your laptop like a sticker, stay in place through normal use, and remove cleanly with no residue when you want them off. 
The key design detail is the thickness. WatchPads are thin enough that your MacBook closes fully with them installed. That might seem like a small thing, but it's what separates WatchPads from any improvised solution you'd try to engineer yourself. A pad that keeps your laptop from closing properly isn't a solution.
They also extend past the palm rest to cover the edge of the MacBook, which is where most watch damage actually occurs. The crown, the lug, the clasp, the side of a metal bracelet link — all of it clears the aluminum instead of grinding against it.
The Difference in Practice
Put WatchPads on your MacBook and you stop thinking about your watch while you work. You stop shifting your wrist to avoid contact. You stop taking your watch off and leaving it on the desk. The setup becomes frictionless, which is what a good accessory is supposed to do.
The Ultrasuede surface also adds genuine comfort over a full work day. It's not a thick pad that elevates your wrists to an awkward angle. It's a surface that simply feels better to rest on than aluminum does, without changing the ergonomics of your setup.
The Short Answer
If you wear a watch and you use a MacBook, a standard wrist rest solves the wrong problem. What you need is protection between your watch and your laptop's surface, placed where contact actually happens. WatchPads do that, made in the USA, built to last, and thin enough that nothing about your setup has to change.