He has a wealth of material available. What would you suggest might help me best using the linking rings with kids?

If you are looking at Rings for children take a look at David Ginn material. He used to have a ring routine for children that was quite good. I used to close my childrens show with one of two routines: Hippity Hop Rabbits or The Linking Rings. The routine I use: http://www.nexternal.com/bburt/Product17 is the classic 8 ring routine taught by Lewis Ganson in either Routined Manipulations vol 1 or 2.....I think that it #1. GREAT routine for children, adult or mixed as it brings in a large number of spectators to examine the rings, etc. Can't recommend it enough whether you get it from the book or my dvd. Although I no longer carry the books they are still available in a D.Robbins edition and are well worth getting for all the other fine magic therein. Best,