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.

Could you modify something like this? http://tinyurl.com/3yx5by
A longer arm puts a lot more stress on everything. Having something
that will handle your $1000 laptop and jostling safely might require
either more money, more effort (opening walls to install blocking) or
compromising on arm length.

An alternative would be to have the laptop holder fold up into the
headboard or above your head, but that would be more obtrusive. The
hospital roll away bed tray is probably the easiest, safest way to
hold your laptop. Modify the tray to suit your needs.

R