>>10511293/ctg/ here. Look into Crazy Aaron’s Thinking Putty, specifically ‘Liquid Glass’. It’s a clear silly putty that is cloudy when handled but becomes clear as it sets. Since it’s chemically the same as crayola silly putty it’s easy to pinch off pieces and place them on the arms, chest, etc to simulate various slimy goo effects (among other things). The stuff should be at your local Walmart and Hobby Lobby.