Gas-Powered stick equivalent?

Gameplay Transmogrification
1

So back in WoD there was a moggable staff called the gas-powered stick which has a unique characteristic: it was invisible when sheathed. This was nice for casters who don’t care to have a big ol staff on their back as they cast their spells, but it was changed to be visible at all times after Legion.

Are there any items like it in the game at this time?

2

Staves? No, I don’t think so. The Brewfest tankards sheath invisibly, though. But that doesn’t really help you, assuming you’re looking for a 2hand option.