Last night Dad and I talked about the many uses of old encyclopedias. Here are some ideas:
They help small children reach the dining room table
You can find really cool pictures to use for school collages
They can be turned into book crafts--like hollowed out treasure boxes
They are good late-night reading
They're helpful if the power goes out and you need an answer to a question
Use them with table leaves instead of mason jars to make ersatz bookshelves.
Fuel
Insulation
Bricks, as Stilly said


Eiseley

P.S. My middle son's jazz concert last night was WONDERFUL! Tom wore a cap and was a smooth cat.