At the moment you might have an abundance of artworks but that that doesn't mean that they'll still be there many years down the track. Works get ripped, lost or just start to go yellow.
A good way to prevent them from falling apart is to put your favourite works in an old photo album. The larger ones, which often don't have individual photo slots, are generally designed to provide an airtight seal.
Such folders are just as good for artworks as they are for photos. They'll stop the works fading and going yellow, keep them safe, and you'll be able to flip through the books many years later.
You can also get other display books, often from art shops, that work well too.
As for the rest of the artwork you don't want to keep, click here for a handy way to put them to good use.