Dark Crystal Marcin Dildo. A new batch of the popular Dark Crystal series of dildos and butt plugs is now available. Made of velvety soft phthalate free vinyl in Belgium, these toys are safe to use with any lubricant, water based, silicone based or oil based. Patryk and Marcin are the two huge whoppers in this batch of Dark Crystals with a more classic dick shape. These are guaranteed to fill you up completely, but please do check the sizes below before ordering them and make sure you can almost handle the huge diameter.