The Cave Of Skulls Pencil (1st Gen, 2017) Skin from Skinit showcases a mustard yellow background with the official Adventure Time logo and the infamous cave of skulls. Your Apple Pencil makes for the perfect creative addition to your iPad mini, iPad Air, and 6th Gen iPad – now you can personalize it with a Adventure Time skin! Skinit’s Adventure Time Apple Pencil skins are the perfect way to make your Apple Pencil stand out. Unlike lower quality decals, this Cave Of Skulls skin for Apple Pencil is made of auto grade 3M vinyl that will not leave any sticker residue on your device. The days of your misplacing or mixing up your Apple Pencil are over when you make this Cave Of Skulls Apple Pencil decal skin by Skinit yours.