It was actually a serious suggestion, Mr. Coward.

Perhaps it's not what the OP is looking for, but others reading these answers might be looking for simple solutions for creating 3D-printable designs.

Minecraft is a 3D editor that a 7-year-old can use. And exporting the models into a printable format with MIneways is also child's play. Honestly, if one were to add a few blocks to Minecraft (such as half-cubes bisected diagonally to allow for more "rounded" shapes), it could actually be a very effective and simple tool for making basic 3D models. Not a professional engineering tool, obviously, but if someone is daunted by spending months learning a serious tool, they can simply fire up Minecraft and Mineways and be printing their creations in 10 minutes.

Minecraft is the easiest 3D modeling software you will ever find. Once you've built your model, export it with the free Mineways software: http://www.realtimerendering.com/erich/minecraft/public/mineways/

I bought a 4-way "microphone amplifier" (like this).

With some 1/4" to 3.5 mm adapters and 3.5 mm cable, you can run a signal to 4 PC speaker systems. The individual gain controls for each line out allow you to compensate for the specific loss in each line due to varying cable lengths.

If you buy the right speaker systems, they could also have local aux in jacks in case you want to listen to an ipod or something. You might want to check whether it replaces or is layered onto the main input, though.

What if I pointed a webcam (with sufficient resolution) at the cease and desist letter and sent out a live stream. Would that still be violating the copyright?

The article mentions that it was a "confidential" document. I don't see how someone can send me something I never asked for and bind me automatically against my will into a confidentiality agreement. Unless maybe its the government and involves a legitimate state secret, but even that must provide some reasonable recourse.

Maybe if the streaming thing doesn't work, someone could start an organization that people would send the letters too and they could provide third party verification that it exists and what the general content is without reproducing or posting the precise "copyrighted" content. It would be like a book review. They could also display the "original works" in some kind of museum.

Unless they start claiming copyright on all discussion and descriptions of the content like the NFL does...