Temperature play is a form of BDSM sensual play where objects and substances are used to stimulate the body's neuroreceptors for heat and cold for sensual effect. Substances used can include water, molten wax, ice, hot oil, chocolate syrup, whipped cream, melted butter, chilled fresh fruit and steamed vegetables. Objects can include sex toys, cutlery, ball chains and necklaces, often pre-heated in hot water or chilled in ice water. Space heaters, radiators, and other sources of heat can also be used for stimulating sensory arousal with heat. Blindfolds may be used to intensify the sensations.