Virtually free animal bedding

Since we have a fair few birds now it makes sense to produce our own bedding as buying saw dust is yet another cost we can avoid. At the same time we are doing our bit for the environment.
A £14.99 cross cut shredder bought in Tesco now shreds all our junk mail, envelopes and letters that would otherwise be thrown away.

The unit uses a modest 112W, compared to larger models (300-700W!) and does a fine job of shredding. Its amazing how much bedding you can make from a few sheets of junk.

Only 17 pages of A4 quickly turned into this:














The shredder will be located in the workshop area and run from a couple of batteries which are charged by solar panels. We can then make animal bedding whenever the batteries are full. Ideally I would want a 12V shredder but I can't find one. If anybody knows where to get one please let me know.