I'm a brand new advisor! I haven't run into this problem yet. But I am also Secretary and Newsletter Editor for my alumnae chapter. I have a really cute stationary trunk that I keep everything in. Well, that and shopping bags.
Other than that it gets saved to files on my harddrive.
Luckily though SK National's is pushing to go paperless!!!!
Practically everything is done through email or downlowds on the Sisters Only section of the website.
If your Nationals hasn't started toward paperless, I'd defintely encourage it.