Do you have old PC's that still function fine but have been replaced by the "3 year" hardware refresh? If you do, why not repurpose then and use them as VMware View Clients.

There is now a free linux based solution available which can be configured online via web interface. Take a look at this webbased View Client ISO creator – TinyCore Builder for VMware View (http://repurpose.vmwarecloud.at)

• Create ISO
• Burn ISO
• Boot from ISO
• Boot it via PXE

If you want to boot from USB, try success using UNetbootin (http://unetbootin.sourceforge.net/), to convert ISO images to USB.