What ideas do you have to assist a Disabled Veteran (with severe spinal injury to the neck) with work from home opportunities so he may sit?

Caution: There are a lot of "Work at Home and Make Millions" scams out there to take advantage of people. There are some companies with legitimate opportunities. Check them out carefully. Then there's the option of setting up your own business. Find a need and fill it. Skills such as computer program coding and testing are excellent.

Freight Broker for owner operator truck drivers.

Get a High backed Office Chair so His Head will rest on the back
get a large Screen for the Computer monitor...
Sit Up and rest often...