Tenor drums are played with mallets or drumsticks. It is used to wrap bass drum strikers and timpani mallets. It is also used to produce the shafts of some musical percussion mallets and drumsticks. Hammers used in many trades include sledgehammers, mallets, and ball-peen hammers. Xylophones should be played with very hard rubber, polyball, or acrylic mallets. Vibraphones are usually played with mallets. Other tools that were used were "limestone, chiseled stones, wooden mallets, and stone hammers". Lightweight wooden mallets are used for peg toys. It is also sometimes used to make lawn bowls, croquet mallets, and skittles balls. Horn or wooden mallets are also used. It is also a common material used in mallets for keyboard percussion. Its keys are mounted on gourds, and struck with mallets with rubber tips. Tools used included the mallets and irons. The instrument is played with rubber-headed wooden mallets. Its hardness make it ideal for making wooden mallets and workbench tops.