The Critical role Taldorei Campaign setting has a vestige(item levels when you do) for a monk. See below. The initial stage is for anywhere from level 5 to 10 the awakened is for 11-15 level play and the Exalted is for 15+ level play. They are a little overtuned, but are quite nice
Wraps of Dyamak
Wondrous item, legendary (requires attunement by a monk)
Created and wielded by the ancient warrior called Dyamak,
these thick cloth strips of enchanted material appear to be
stained with blood of unknown origin. You have a +1 bonus
to attack and damage rolls made with your unarmed strikes.
Whenever you finish a short or long rest, you gain a
number of temporary hit points equal to your full ki points.
Awakened
When a character awakens the Wraps of Dyamak, apply
the following changes to the item’s traits:
• Increase your bonus to attack and damage rolls to +2.
• As a bonus action, you can cast the spell misty step. You
cannot use this ability again until you score a critical
hit with an unarmed strike, or you complete a short
or long rest.
Exalted
When a character exalts the Wraps of Dyamak, apply the
following changes to the item’s traits:
• Increase your bonus to attack and damage rolls to +3.
• When you hit with an unarmed strike, you can choose
to make the attack a Ravenous Strike. The target takes
an additional 6d6 necrotic damage, and you regain hit
points equal to the additional necrotic damage dealt.
You cannot use this ability again until you complete a
short or long rest.