I've been doing some searching and found a wealth of good information, especially for clarinets.
At this link, You'll find links to the various woodwind fingering charts, and in some instances trill charts. They're all in PDF format, so you'll need to make sure you have Adobe Acrobat Reader installed (most computers already have this installed).
At the bottom of that page, you'll see a section titled "Free Downloads". Listed there are complete method books for the clarinet. If you don't own any methods, download these and print some of the pages out.
High School clarinet players should give a look at
this book. In particular, check out page 33-34 of that book. Some good scale information and arpeggios.
If you're particularly ambitious, check out
this book. It is 100+ pages of orchestral excerpts for clarinet...FREE!
Enjoy!!
