To get this unlockable items, you must kill the number of Skulltulas Spiders that is required. After you kill the skulltulas spiders, collect the tokens and then go to the Skulltula House in Kakariko Village to get your prize.

Item	Tokens
Adult Wallet	10 Skulltula tokens
Bombchus	40 Skulltula tokens
Giant's Wallet	30 Skulltula tokens
Huge Rupee	100 Skulltula tokens
Piece of Heart	50 Skulltula tokens
Stone of Agony	20 Skulltula tokens