Japanese accessory manufacturer iLex has announced four official Splatoon 2 accessories for Nintendo Switch.
The first two are EVA Pouches. Keep in mind you will need to detach your Joy-Con in order to store your Switch inside the pouch.
Next up are Game Card cases that can store up to 12 Game Cards.
All four accessories launch November 10, 2018. Purchase via the links below from Amazon Japan (ships worldwide).