So I'll look for opportunities to turn a piece into a canon.
The Irish fiddle tune below is one I arranged for elementary string quartet. My original (quartet) version is available in this book:
Book One
http://www.lulu.com/product/paperback/fiddle-tunes-for-quartets-book-one/6001877
Book Two
http://www.lulu.com/shop/nicholas-scarim/fiddle-tunes-for-quartets-book-two/paperback/product-6002135.html
But I've also sometimes used one or more of these arrangements as a canon for four violins by changing the clefs and bringing the viola and cello parts up an octave. This will give four young violinists a sight-reading challenge... and they're fun! Four times through the piece, without stopping, gradual accelerando in fact!, switch to the next staff each time through...
Here's the first piece from the book, arranged for four violins: (and it would work for clarinets, saxes, flutes - up a fifth - and so on.)
If you send me a nice note, I'll send you a PDF of this sheetmusic. nycmusicteacher@gmail.com
You can see and hear more of my music at www.sheetmusic2000.com
Cheers! - til next time.
-Nick