To find the Pokopia Windup Inkay toy, start at the broken bridge in the Imperial area of Bubbly Basin. From there, go to the big staircase heading down to the east of the bridge and descend. Once you reach the bottom, spin your left stick until you drop into the depths. Turn back toward the stairs and walk beneath them, staying close to the northern wall until you spot a small cave entrance lit up with purple coral, with an orange coral inside. Follow this tunnel until you come to breakable rocks on your right. Break through them to reveal a hidden cave holding a Pokeball. Interact with the Pokeball to claim your Windup Inkay toy!
You can verify you’re in the correct spot by checking the map in the image above, which marks the location of the Windup Inkay. Keep an eye out while exploring, as you’ll find plenty of other useful resources and items, including Pokopia Grubby Pearls.
Once you have your toy, you can construct the Muddy Playtime habitat by placing the Windup Inkay along with a Towel Rack and a Floating Log next to some muddy water. I won’t spoil which Pokémon might appear here, but you might be able to figure out at least one.
For more on unique Pokémon habitats, be sure to check out guides on the Pokopia Jirachi habitat and the Sableye habitat — both of which can only be accessed by collecting special event items.