SimsVIP reports:
Over the last few days, players around the community have been talking a whole lot about the Ball Pit that was released with The Sims 4 Toddler Stuff. Many players believe the ball pit object was poorly done and that it doesn’t live up to the “standard” of the game.
Via Lazy Game Reviews
If you are looking for an alternative to the current Ball Pit, BrazenLotus has released an override object! Their version of the ball pit looks much better, adds several 3D balls to the pit, and gives players an alternative to what is currently in the game.
The replacement object (found here) looks vastly better, but beware of the significantly higher poly count.