The Toys its collected item give buffs for the next characters you create, the game has 3 available toys.
The first toy is the BunnyEdit
You unlock this toy by giving a large candy to the little girl in the candy shop of joe
give +5 of heal for all Potions and healing foods
The second toy is the NightmareEdit
You unlock this toy by killing Nightmares
give +2 of attack (attack increases the damage of swords)
The third toy is the PirateEdit
You unlock this toy by digging up treasures
give +5 of money to all you sell.