On Nov 29, 7:46 pm, wrote:
I am looking for a headboard-attached swivel arm for a laptop, so I
can use the laptop while in bed, and then be able to quickly and
conveniently "push it away" when I'm done.

None of the swivel arms that I've seen online so far seem good enough.
They don't seem to be long enough. Also, The kind I need would
probably have to have at least 3 joints for proper positioning/
adjustment.

TIA

My concern would be that the weight of the laptop along with user's
typing hands would cause a lot of bounce if the laptop was mounted at
the end of long, hinged bar, unless that bar was pretty solid and each
joint very tight. Other's have suggested dental trays, which would
indeed have the characteristics required for solid support at the end
of an extended, jointed arm.

I'm guessing that you're looking for some type of industrial quality
laptop holder, not something available through normal consumer
channels. Of course, then we're looking at industrial quality costs
also. Try contacting some laboratory or industrial equipment supply
houses and see if they have any ideas.