From the Jurors Frequently Asked Questions for my County (I'm on jury duty today, so wish me well):
You may bring work or reading material, or a personal electronic device you can listen to with headphones. You may also bring lunch or a snack. A refrigerator, microwave oven and vending machines are available in the jury assembly room. Don’t bring anything to the courthouse that you couldn’t take on an airplane. Pocket knives, “Leatherman” type multi-use tools, scissors, knitting needles and other pointed or sharp items are not allowed in the building.
Aaaaaaarrrrrrgggggghhhhh! Now how am I going to occupy myself?