Static
Just remember - eliminating static from a piece of Scotch tape at a trade show is a little easier than eliminating static from an electrical device.
Do a Google search for anti static environments and you will garner alot of companies that make real world products that probably work alot better than a piece of string.
Also depends on how much you want to put into it, too
Also, pay attention to your temperature and humidity settings.
We have two humidifiers cranking through 8 gallons of water every 4 hours and they struggle to maintain 50% right now.