Aquarium

The Snow Zone introduces you to Snowballs, which you can get by breaking snow with a special Shovel.

Here you can get Jerry's Actual Head, along with Snowy Cellphone and Snowy Candle Pet from 2 hidden NPCs.

There is another hidden NPC which sells the Magic Wand. You can reach them if you jump (while you have jump boost) at -60, -38.