I have one of the old "teacher's" style desk that has drawers that will not open unless I open the top drawer. I love it because I did not have to worry about my little room mates getting ahold of my rotary cutter, pins, needles, etc.
I also have an office chair that is adjusted perfectly for using the desk with the sewing machine on top. I am considering having BIL inset the machine on the right side of it, but not so far. I am not sure I am willing to lose one of the two writing surfaces that are built into it (like cutting boards in a kitchen). Funny how hearing that little "bwang" noise when the drawers are released, reminds me of happy times in grade school. Paid $35 for the desk at Goodwill, and $15 for the office chair at "Restore". Living on a disability forces me to be very frugal.