Thanks! All great ideas. I wish I had a better shredder.Almost all my shredders are crosscut shredders.
I don't use paper shreds, per se, in the nest boxes. The paper would stick to the freshly laid eggs and Dear Wife did not like cleaning the paper off the eggs. That did not last long at our house. I have heard mixed results from others using paper shreds in the next box. Maybe it depends on the paper. It works for some, and not for others.
So, I experimented with different nest box material. Pine shavings work great, but eventually I would have to buy another bag. Free wood chips work great, if you can get them small enough. Not all wood chips are small in size. Some are actually shredded wood, or wood mulch, if they come out of processing in those large bin rotating drums. I have tried long dried grass in the nest boxes and that worked fine, but I don't have that available in our snowy winter months. I have used dried leaves as well. I guess lots of things would work for nest boxes.
Although I don't use paper sheds in the nest boxes, I discovered that if I use shredded cardboard, the cardboard shreds work just fine. Like pine shavings, the cardboard shreds are a bit heavier, bulkier, and don't stick to the eggs like thin paper. So, I will save up some cardboard and shred that separately for the nest boxes. Of course, I can use cardboard shreds year-round, and I don't have to pay for them. In fact, I just refilled my nest boxes yesterday with fresh cardboard shreds.
I don't have big office shredders, so I have to cut my cardboard into 2-3-inch-wide strips and feed them down the middle of the machine where you would put in credit cards. When cut into narrow strips, the cardboard does not jam my paper shredders.
My hands are not as strong as they used to be, so I bought a power cutter to cut the cardboard into strips. They are sold under many brand names. The most recent one I got was at Menards...
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I got mine on sale for less than $10.00 at the time, but Menards normal price on this cutter is less expensive than any other options I have found. And, it works great for cutting cardboard into strips.
Of course, you can also use the power cutter for many other applications as well. I use it often to cut the plastic off blister packs when I buy new stuff. I hate that plastic molded stuff. I think originally it was used to cut fabric. In any case, it works on lots of stuff.