I need a more comfortable workspace, what does everyone do? [on hold]

I need a more comfortable workspace, what does everyone do? [on hold]

I get too uncomfotable in office chairs or any standard chair, sitting
forward on sofa with laptop etc. I need to be able to sit back in a well
padded chair and have easy access to a keyboard and mouse connected to a
laptop. I've seen laptop trays on ebay but they would only really be
suitable for sitting up on a sofa or lying in bed. Does no one else have
the issue? I find I can't be productive without comfortable access to
keyboard and mouse with relaxed posture. It's a lot better in the office
in work, but at home I just can't seem to find a way. I haven't got room
for a full desk station etc.
I suppose what I am asking is if there is any sort of dentist shaped chair
anyone uses with build in laptop and mouse holder. Or how are the rest of
you coping?!