Non-metal furniture sliders, and felt pads, coasters, grippers, bumpers, and leg tips, made predominately of materials other than metal, for placement between furniture and floors, and for placement between hard surfaces and delicate surfaces with which they would otherwise come into direct contact, in order to reduce or prevent scratching and scuffing, and in order to reduce or prevent skidding and noise; and coasters and caster cups, made predominately of materials other than metal, for placement between furniture and hard and carpeted floors with which they would otherwise come into direct contact, in order to prevent damage to furniture, floors, and carpet, and in order to reduce or prevent skidding and noise