Drain the Lake Clip
In Jellyfish Mesas, Patrick is tasked with fetching a golden spatula below the goo. To do this, he must stun and throw multiple Ham-Mer robots at the fountains in the lake. Destroying all of the fountains will stop them from filling the lake. The goo will lower, and reveal the spatula.
Using Lag Clipping, SpongeBob is able to store enough downwards momentum and clip through the floor of the island. From there, he can land on some terrain, turn around, and reach the spatula's platform. This skips the entire Drain the Lake challenge.