Massage
Massage oils and candles do more than just feel good, actually, scratch that, no em-dashes. Massage oils and candles pull double duty in ways most people don't expect: a good silicone-based massage oil works just as well as a lubricant, which makes it genuinely useful beyond a back rub. Oil-based versions are a different story though. Keep them away from intimate areas since they can irritate mucous membranes, and they'll break down latex condoms too. Massage candles melt into a warm, skin-safe oil at low temperatures, which is a nicer experience than it sounds. You'll find both types here, so check the product description before you buy if you plan to use it for more than massage.