It's not only good for the environment: you'll also feel less guilty about throwing things out if they're going to be re-used - even on a small scale. T-shirts with holes in them make perfect cloths and dusters, old party dresses can be used for fancy dress for the kids, and boxes can be used for storage.
Use your CD-writer
Like paperwork, photos can take up an incredible amount of space. Say goodbye to bags full of photos and stacks of old video cassettes by making copies of everything you can onto CDs and DVDs.