I wear these.. they are SUPER cheap... the soles are wound cotton and they arn't too slippery but just enough...
http://www.ebay.com/itm/Men-Chinese-Martial-Art-Kung-Fu-Ninja-Shoes-Slip-On-Cotton-Sole-Canvas-Slippers-/221209133372?var=&hash=item338117813c:m:mkA5bV-gywS3gUzispMU0uw