Recommended Products to Use
Acid Free Page Protectors
This is the kind of thing you will want to store some of your documents long term. You want to make sure what ever kind of document protection you use is acid free to prevent artifacts from yellowing prematurely.
Family Tree Software
If you are using Ancestry.com, this is a great idea to be able to take your family tree offline. It give you additional security and privacy because you don't have to upload family photos or your research to the web.
Acid Free Journal
Consider keeping your thoughts and ideas in an acid free journal. This can be a great idea for documenting your family research and also gives you something that you can leave to future generations.