Those wiggling, groping appendages at the end of your arms seem to have a life of their own, and the sight of other people's hands causes you to break out in a sweat. On Halloween, consider taking your fear in hand and making five-fingered candleholders and tabletop decorations. These are made of plaster and get a ghoulish gray cast from a brush with black gouache.
We used a food-grade alginate, a water-based skin-safe molding powder, to cast hand molds. (Don't put your hands in the plaster of Paris; it can cause burns.)