I used to get the biggest headache and worst stiff shoulders when I'd go quilting at church where I had to sit with my machine on the table. One of the ladies suggested a boat seat cushion to sit on, and boy is it a life saver. My DH picked one up at Fleet Farm for $8. I store it in my Tutto rolling cart when my machine isn't in it, so I always remember to pack it when I'm packing up my machine. My friend also uses it when she comes for a sewing day and her machine sits on the table.