Anal sex is one of the most taboo forms of sexual play commonly practiced. In addition to fingers and tongues, sex toys such as butt plugs and anal beads have become more popular. Butt plugs provide a sensation of fullness - they usually have a narrow tip, wider middle and a narrow bottom secured to a flared base.
Anal beads are perfect for those who enjoy the feeling of the sphincter muscles opening and closing to let an item in and/or out. Beads provide the sensation of fullness without putting pressure on the opening of the anus and retrieving them can make you howl with pleasure. All anal toys have a flared base - NEVER use anything for the butt that doesn't or you risk a trip to the emergency room and an unwelcome spelunking adventure.
The anus isn't self-lubricating so ALWAYS USE PLENTY OF LUBE!! Jelly and cream lubes are generally thicker, water based lubes are great and silicone based lubes are probably the best type to use. Known for it's slick and smooth texture and long lasting abilities, silicone adheres to the rectal walls so reapplication isn't as frequent. However, never use a silicone lube with a silicone or cyber skin/UR3 toy. Silicone adheres to itself and will ruin your toy.