Bands are da bomb! Check out Dan Harlan's stuff. Aldo Colombini has a booklet about rubber bands, if I'm correct. Also, Link! by Nabil Murday may be worth checking out. I don't really perform link, because IMO it's really not that practical, but it goes over Handcuffs in great detail, plus variations and more. Great beginners guide. Impromptu is the way to go, so I don't really suggest going for all of them gimmicks with rubber bands. Always wear them on your wrist!