Ball bearings were tiny metal balls that were used to hinder pursuers by forcing them to slow down and tread carefully or risk tripping and falling.[1] Glass variants of these balls, known as marbles, were also used for that purpose.[2]


A bag of 1000 metal ball bearings could be spread over an area equivalent to a square 10 ft (3 m) on a side to provide an effective coverage.[1]

Glass marbles were available for purchase through Aurora's Whole Realms Catalogue.[2]



  1. 1.0 1.1 1.2 1.3 Mike Mearls, Jeremy Crawford (2014). Player's Handbook 5th edition. (Wizards of the Coast), pp. 150–151. ISBN 978-0-7869-6560-1.
  2. 2.0 2.1 2.2 Jeff Grubb, Julia Martin, Steven E. Schend et al (1992). Aurora's Whole Realms Catalogue. (TSR, Inc), p. 19. ISBN 0-5607-6327-2.